Trailhead

Feb. 14: Barack Obama was your new bicycle .
Feb. 16: Hillary Clinton was decidedly not .
Feb. 17: John McCain tried to get in on the joke .
Feb. 17: Ron Paul made it weird .
Feb. 17: Michelle Obama made it annoying .
Feb. 18: Steve Jobs made it jump the shark .
Feb. 19: It all went meta .

One week: That's how much time an Internet meme needs to propagate, become itsown opposite, and then finally collapse back in on itself.

All dates come from Network Solutions domain registration information.