TechCrunch and All Things Digital are reporting that Yahoo has acquired BuzzTracker, a memetracker, for about $5 million. Participate Media CEO Alan Warms' post says all of the staff from Patricipate Media will be joining Yahoo. Patricipate Media runs also runs Rumormill and powers the Real Clear Politics BuzzTracker located here on FoxNews.com.
Michael Arrington says "its odd that Yahoo didn't make a run for TechMeme, the heavyweight in the automated news tracking niche." That would likely be a much more expensive acquisition. It is also possible that Yahoo tried to acquire a different memetracker company but they were asking for too much money.
You can find a few more memetrackers here on our Quick References page.
