From Blogometer (a good daily resource by the way):

Each time this week we’ve visited Technorati, the popular blog search engine, the "Top Searches This Hour" feature has placed "Cindy Sheehan" at the very top. At one point this a.m., "Sheehan" was also #5. The Blogometer is trying to remember the last time this happened, but no person or event — not the fight over Terri Schiavo, not the 7/7 bombings — stands out.