Damn, I was thinking the same thing too! TweetMachine does look like a pretty neat webapp. I'm not a big enough Twitter user, but if I was promoting an app thr

Damn, I was thinking the same thing too! TweetMachine does look like a pretty neat webapp. I'm not a big enough Twitter user, but if I was promoting an app through Twitter, I'd certainly regard $20/month as likely a solid investment. You might want to try and emphasize some approaches to app promotion and support in your features page.