Well - I wouldn't go that far :-) But they have a great API (and a Rubygem to boot) that makes it simple to sync whatever data you want with them. You can also

Well - I wouldn't go that far :-) But they have a great API (and a Rubygem to boot) that makes it simple to sync whatever data you want with them. You can also setup tags. I have a "might pay" tag based on: 1) signs in often, 2) hasn't paid yet, 3) has added 5 or more tasks and features. These are people I like to keep an eye on and get to know :-)