I've just received the information that I earned the Android Badge - anyway I couldn't find this badge in the listing. Is there a description available on how this badge is earned and are there more badges which are not described in the badges list?
marked as duplicate by Time Traveling Bobby, ChrisF, kiamlaluno, Pops♦, M. Tibbits Aug 31 '11 at 14:27
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It's a tag badge. The full list is here. This lists the requirements for each level of the badge (bronze, silver and gold). You need to get a total score above a threshold and provide a certain number of non-community wiki answers to earn the badge.
The android badge lists all the recipients. Your name is first (at the moment) as you are the latest recipient.