Postage in sheets of 20 - 1 sheet for $20 | GoodStorm.com

This is brilliant. I'm still not sure how they got around the postal service bit, since I don't think you can get these at the post office (officially endorsed, yadda yadda). My guess is that they got that barcode in the corner to work like a metered mail stamp.

In any case, I think its a worthwhile effort. It also made me think of Rich Mackin's recent letter about those completely obnoxious yellow ribbon magnets.