"photo petition"
yeah i know i know i know - political stuff. and significant interactive media...

Moveon.org just launched what is probably the first ever "photo petition." Time sensitive (48 hours). Posting them on Flckr here.
"We're aiming to collect thousands of photos of ordinary Americans with homemade signs, asking Congress to oppose the Republican plan to cut services for poor while handing tax breaks to the rich. To make sure you're heard, we'll deliver every photo to every member of Congress before the final vote and run some as online ads in the newspapers Congress reads."