Ashton Kutcher, the actor and former fashion model with over 6 million Twitter followers, has released his own Twitter app for the Mac and Windows. A.plus was developed in partnership with UberMedia and uses Adobe AIR, a cross-platform runtime environment, which makes it ineligible for distribution via the Mac App Store. The app is available is available to download free here. Features     •    View timeline, mentions, messages     •    View saved searches, favorites, and lists     •    Search for tweets     •    Save searches     •    Search for people     •    Delete tweets     •    Edit your account information     •    Change your avatar     •    Follow lists     •    Create lists     •    View full profile information of any tweeter     •    Tweet shrink – save space by turning tweets into txt speak…