I noticed the gradual reduction of message length too when Yo came out (email -> tweet -> yo), and wondered what it would mean to transmit less than a single bi

I noticed the gradual reduction of message length too when Yo came out (email -> tweet -> yo), and wondered what it would mean to transmit less than a single bit of information. I came to the conclusion that it would be a messaging system, somewhat like yo where sometimes it would send a notification even when I hadn't told it to. If you configured it so it sent an extra notification randomly for every notification you sent, then you're conveying approximately half a bit of information. Strangely enough, I think this could be quite useful, as a way of initiating conversations with people you would otherwise lose contact with.