I’ve been interested in the micropayment space for a long time now. I think it’s a promising market, and one that is just waiting to be addressed well. A while back I discovered a service called Tipjoy, which started as a Y Combinator funded project. I liked it the first time I saw it, and I like it even more now. The most recent development from them is a tight integration with Twitter which lets people use a syntax similar to Twitter’s direct message function to send payments to other Twitter users. For example: p @peter $0.25 because he finds cool new websites This would create a promise of paying…