Twitter user Guy Dayan (@guygo) asked 30 people to trust him by uploading images he sends them as their profile pictures. The result? A cute little hack for the "Following" section of his Twitter page.
See the final result (and the making-of video clip) at Nerve: Link or at Guy's Twitter page and while you're at it, please follow @neatorama!
And it's falling fast.
The reason for the 140 character limit - that's about the length of the average persons attention span (unless of course they move their lips while they read - which most tweeters do - so then they come back later to finish).