What about something like viglinks? Turn every bare outbound link from twitter.com into an affiliated link, turn every link from t.co into an affiliated link, etc.<p>Yes, people will be able to avoid this by using shorteners other than t.co, or by using a third party client, but if what twitter is saying is correct (the majority of users use the official client or use twitter.com), then this shouldn't be a problem at all.<p>Are they already doing this? It seems incredibly obvious, it's totally transparent to the users (I don't imagine that any of the users would be against this), everybody wins.