"Twitterrific 3.0 can be used completely free of charge with no limitations. Registering simply eliminates advertising from the tweet timeline. Twitterrific has gone from a fun side project to a full-fledged application that is enjoyed by tens of thousands of users every day. This growing user base reports bugs, requests new feature sets and regularly sends support questions. All of these things take time, and ultimately money, to make a reality. Adding inline advertising via The Deck allows us to keep the app "free" without crippling any of its features. Hope you can understand our point of view. Thanks for listening." - Gedeon Maheux