According to a 2008 survey by Technorati, which runs a search engine for blogs, only 7.4 million out of the 133 million blogs the company tracks had been updated in the past 120 days. That translates to 95 percent of blogs being essentially abandoned, left to lie fallow on the Web, where they become public remnants of a dream — or at least an ambition — unfulfilled.

"Before you could be anonymous, and now you can't," said Nancy Sun, a 26-year-old New Yorker who abandoned her first blog after experiencing the dark side of minor Internet notoriety. She had started it in 1999, back when blogging was in its infancy and she did not have to worry too hard about posting her raw feelings for a guy she barely knew.

Ms. Sun's posts to her blog — www.cromulent.org, named for a fake word from "The Simpsons" — were long and artful. She quickly attracted a large audience and, in 2001, was nominated for the "best online diary" award at the South by Southwest media powwow.

But then she began getting e-mail messages from strangers who had seen her at parties. A journalist from Philadelphia wanted to profile her. Her friends began reading her blog and drawing conclusions - wrong ones - about her feelings toward them. Ms. Sun found it all very unnerving, and by 2004 she stopped blogging altogether.

Judging from conversations with retired bloggers, many of the orphans were cast aside by people who had assumed that once they started blogging, the world would beat a path to their digital door.

"I was always hoping more people would read it, and it would get a lot of comments," Mrs. Nichols said recently by telephone, sounding a little betrayed. "Every once in a while I would see this thing on TV about some mommy blogger making $4,000 a month, and thought, 'I would like that.'"

The answer would come from a range of data, for instance video recordings or databanks which store readings from electronic chips. Such chips embedded in people's clothes could track their movements. He told a privacy conference the internet would be capable of holding huge amounts of data very cheaply and patterns of information could be extracted very quickly. "Everything can be recorded for ever," he said.

He was speaking at a conference at which a report commissioned by Richard Thomas, the privacy watchdog, was launched. Mr Thomas has said Britain is "waking up to a surveillance society that is all around us" and that such "pervasive" surveillance is likely to spread.

The Internet Society of China has recommended to the government that bloggers be required to use their real names when they register blogs, state media said on Monday, in the latest attempt to regulate free-wheeling Web content.

The society, which is affiliated with the Ministry of Information Industry, said no decision had been made but that a 'real name system' was inevitable.

"A real name system will be an unavoidable choice if China wants to standardise and develop its blog industry," the official Xinhua news agency quoted the Internet Society's secretary general, Huang Chengqing, as saying.

"We suggest, in a recent report submitted to the ministry, that a real name system be implemented in China's blog industry," Huang said.

No. 4417749 conducted hundreds of searches over a three-month period on topics ranging from "numb fingers" to "60 single men" to "dog that urinates on everything."

And search by search, click by click, the identity of AOL user No. 4417749 became easier to discern. There are queries for "landscapers in Lilburn, Ga," several people with the last name Arnold and "homes sold in shadow lake subdivision gwinnett county georgia."

It did not take much investigating to follow that data trail to Thelma Arnold, a 62-year-old widow who lives in Lilburn, Ga., frequently researches her friends’ medical ailments and loves her three dogs. "Those are my searches," she said, after a reporter read part of the list to her.

AOL removed the search data from its site over the weekend and apologized for its release, saying it was an unauthorized move by a team that had hoped it would benefit academic researchers.

But the detailed records of searches conducted by Ms. Arnold and 657,000 other Americans, copies of which continue to circulate online, underscore how much people unintentionally reveal about themselves when they use search engines — and how risky it can be for companies like AOL, Google and Yahoo to compile such data.

"This was a screw up, and we're angry and upset about it," Andrew Weinstein, an AOL spokesman said. "It was an innocent-enough attempt to reach out to the academic community with new research tools, but it was obviously not appropriately vetted, and if it had been, it would have been stopped in an instant."

The board of Community High School District 128 voted unanimously on Monday to require that all students participating in extracurricular activities sign a pledge agreeing that evidence of "illegal or inappropriate" behavior posted on the Internet could be grounds for disciplinary action.

The rule will take effect at the start of the next school year, officials said.

District officials won't regularly search students' sites, but will monitor them if they get a worrisome tip from another student, a parent or a community member.

Mary Greenberg of Lake Bluff, who has a son at Libertyville High School, argued the district is overstepping its bounds.

"I don't think they need to police what students are doing online," she said. "That's my job."

Associate Superintendent Prentiss Lea rebuffed that criticism.

"The concept that searching a blog site is an invasion of privacy is almost an oxymoron," he said. "It is called the World Wide Web."

So only hours after she died in an automobile accident near Valdosta, Ga., early on the morning of Feb. 27, her father, John Walker, logged onto her MySpace page with the intention of alerting her many friends to the news. To his surprise, there were already 20 to 30 comments on the page lamenting his daughter's death. Eight weeks later, the comments are still coming.

"Hey Lee! It's been a LONG time," a friend named Stacey wrote recently. "I know that you will be able to read this from Heaven, where I'm sure you are in charge of the parties. Please rest in peace and know that it will never be the same here without you!"

Just as the Web has changed long-established rituals of romance and socializing, personal Web pages on social networking sites that include MySpace, Xanga.com and Facebook.com are altering the rituals of mourning. Such sites have enrolled millions of users in recent years, especially the young, who use them to expand their personal connections and to tell the wider world about their lives.

Inevitably, some of these young people have died -- prematurely, in accidents, suicides, murders and from medical problems -- and as a result, many of their personal Web pages have suddenly changed from lighthearted daily dairies about bands or last night's parties into online shrines where grief is shared in real time.

Tom Anderson, the president of MySpace, said in an e-mail message that out of concern for privacy, the company did not allow people to assume control of the MySpace accounts of users after their deaths.

"MySpace handles each incident on a case-by-case basis when notified, and will work with families to respect their wishes," Mr. Anderson wrote, adding that at the request of survivors the company would take down pages of deceased users.

Milk Pig, another blog reported to have been disappereared, is also back in action. Both Massage Milk and Milk Pig are hosted on Yculblog.com. However the third blog mentioned in yesterday's Danwei report, Pro State in Flames is still not functioning.

Hmm.

This bill would require an operator of any interactive computer service or an Internet service provider to establish, maintain and enforce a policy requiring an information content provider who posts messages on a public forum website either to be identified by legal name and address or to register a legal name and address with the operator or provider prior to posting messages on a public forum website.

The bill requires an operator of an interactive computer service or an Internet service provider to establish and maintain reasonable procedures to enable any person to request and obtain disclosure of the legal name and address of an information content provider who posts false or defamatory information about the person on a public forum website.

In addition, the bill makes any operator or Internet service provider liable for compensatory and punitive damages as well as costs of a law suit filed by a person damaged by the posting of such messages if the operator or Internet service provider fails to establish, maintain and enforce the policy required by section 2 of the bill.

The US government is developing a massive computer system that can collect huge amounts of data and, by linking far-flung information from blogs and e-mail to government records and intelligence reports, search for patterns of terrorist activity.

The system - parts of which are operational, parts of which are still under development - is already credited with helping to foil some plots. It is the federal government's latest attempt to use broad data-collection and powerful analysis in the fight against terrorism. But by delving deeply into the digital minutiae of American life, the program is also raising concerns that the government is intruding too deeply into citizens' privacy.

But ADVISE and related DHS technologies aim to do much more, according to Joseph Kielman, manager of the TVTA portfolio. The key is not merely to identify terrorists, or sift for key words, but to identify critical patterns in data that illumine their motives and intentions, he wrote in a presentation at a November conference in Richland, Wash.

For example: Is a burst of Internet traffic between a few people the plotting of terrorists, or just bloggers arguing? ADVISE algorithms would try to determine that before flagging the data pattern for a human analyst's review.

Privacy concerns have torpedoed federal data-mining efforts in the past. In 2002, news reports revealed that the Defense Department was working on Total Information Awareness, a project aimed at collecting and sifting vast amounts of personal and government data for clues to terrorism. An uproar caused Congress to cancel the TIA program a year later.

Most of the US cases in this area relate to defamation actions. In one recent case, the Delaware Supreme Court reversed a lower court ruling that a council official, suing over remarks posted online by an unknown blogger, could force the blogger's ISP to reveal his identity. The official first had to prove that the remarks were capable of a defamatory meaning -- which he failed to do, according to Chief Justice Myron Steele.

"Blogs and chat rooms tend to be vehicles for the expression of opinions; by their very nature, they are not a source of facts or data upon which a reasonable person would rely," wrote the Chief Justice. He added that plaintiffs harmed by a blog have an instant remedy available: blogging themselves.

But there can be a down side. Teens are doing more than just pouring their hearts out in these online forums; many are posting provocative pictures, discussing real or imagined sex lives, berating and threatening one another, and recounting drinking and drug use. And that can get them in trouble with stalkers, authority figures and even future employers, experts say.

"Kids are doing outrageous things to get attention," said Parry Aftab, a privacy lawyer and executive director of WiredSafety.org, a Web site dedicated to online child safety. "They are looking for their day in the sun, 15 minutes of fame, something to show how they are special."

Aftab tells parents to focus on the "three Cs": content, contact and commercialism. Content -- what kids are actually saying online and how they say it -- often comes as a shock to parents but isn't always the most critical thing. "Their first concern is (obscene) language," Aftab said. "Their bigger concern should be about contact: who can communicate with them that they don't know."

Many of the teen-oriented blog sites now have privacy options that let users restrict who can view their site, giving access only to people they know. Parents concerned about safety may want to suggest or insist their teen use those access controls, Aftab added.