Barnstars are awards given on the Wiki for someone you want to give recognition—for putting hard work, doing something that really needed to be done, or just making the wiki a better place to be. The concept of the barnstar as a Wiki award was created by Sunir Shah on MeatballWiki, for "barn raising": doing great work to help build the community.
There's no official procedure for determining who gets a barnstar. Just be bold and give one to someone you think deserves one.
Can't find one that says what you want to say or looks like what you want it to look like? Make up your own and list it on this page! (It might be nice to have some Wikia-specific awards...)