ihavethemoon:

This is great.

charlietodd:

My friend Jeff Greenspan developed this cool technique for “bombing” a Facebook wall.  He got a crew together to change their profile photos to letters and then sequentially post “KEEP FEAR ALIVE” on the walls of Glenn Beck, Sarah Palin, and Fox News.

Link: Letterbombing

Also see: The Tourist Lane, a collaboration between Jeff and Improv Everywhere.