The other day I was fascinated by the volume of pictures uploaded to twitpic.  They appear to be on a similar trajectory to Photobucket back in the early days of MySpace.  I bet twitpic rides Twitter to quite a handsome sale!  I also came across song.ly, a relatively new service for tweeting music.  For fun, I mashed the two feeds up.  The result is a surreal experience, watching people tweet pictures while listening to the music from others, set against a backdrop of music visualization.