Amazon's officially dipped its toes into the cool, clear waters of Android software market, launching its own App Store earlier today. Folks can search for apps using the online retailer's familiar database, and can even find a sweet little early adopter bonus today: Rovio Mobile's (Amazon-exclusive) Angry Birds Rio, marked down from $0.99 to the considerably lower $0.00.

You might want to considering bookmarking that particular site for your future perusal -- according to a banner at the top of the page, Amazon's Android store will offer one paid app for free every day.

[Thanks, Justin!]

This article was originally published on Joystiq.