"April is the coolest month," TS Eliot wrote in 1922, proving that starting a month with a dedicated to fools has been around for a while. But it took the blogosphere to allow the lame pranks to be fruitful and multiply with such great speed.
Giovanni has built a wiki to serve as Lameness Central. By the way, did you hear that Donald Rumsfeld came clean this morning, saying he "lied through my teeth to get us into Iraq. I just thought it would be fun."