According to builtwith there are over 1.6 million Joomla based sites out there. Pretty impressive really, are you one of them? If so, then this post is aimed at you! There may be 1.6 million sites, but the sad reality is not everyone is giving back (not that you're obliged to). It's so easy to do, you don't even need to be a developer there are plenty of other things you can do to help the community!
So if you use Joomla, and haven't contributed anything recently read the rest of this post for ideas on how you can help (it won't cost you a thing!).