I run a url shortener service (vb.ly is now vbly.us) and when someone tweets a link 80+ bots come by immediately and 'unwrap' the url - so plenty of folks are building these systems (Most of them are on AWS and most don't have a recognizable user-agent or anything running on port 80 of their IP for identification).
Now I'm on the other side and wondering if I can tap into one of these services. Any ideas? Thanks!