I wasn't able to log in. I went to your site, clicked the "get started" button, and went to Twitter to log in.
Once I logged into Twitter no link was given to go back to your app. I then tried going back to tweetsip.com and refreshing the page, but each time when I tried to continue I was again asked to log into Twitter. I could find no way to make it work.
I'm using the Firefox alpha (Shiretoko), so it could be me. But I'd double-check the process after you've logged out of Twitter, cleared cookies and cache, etc.
Once I logged into Twitter no link was given to go back to your app. I then tried going back to tweetsip.com and refreshing the page, but each time when I tried to continue I was again asked to log into Twitter. I could find no way to make it work.
I'm using the Firefox alpha (Shiretoko), so it could be me. But I'd double-check the process after you've logged out of Twitter, cleared cookies and cache, etc.
Sounds like a cool idea though.