Like many, I downloaded iTwitter when it was claimed to be "first twitter app with push notification." Well, it was and it wasn't (only pushes against other iTwitter users) and despite clean user interface, it was missing a bunch of essential features. Since then, the app became a paid app ($2.99). I fired up App Store Update yesterday and lo-and-behold, the name has changed to TwitBird Pro with a bunch of new features. It now has iChat style direct messages screen, refreshes much faster, a slew of UI refinements, settings page, "read later" offline archive feature, trends, beefed up search, the list goes on. It doesn't push from all users yet but that is promised in the future update.