I don't know why I've never mentioned here that I have a Facebook group. Trying to keep things separate, I suppose. Anyway, there is no good reason to keep them separate, so I'm spilling the beans!
It's called Learn Photography. If you're on Facebook, you can search for it there, just type 'Learn Photography' into the search box. It's honestly a pretty great group, through no fault of my own. We have some amazing members (about 470 at the moment, and still growing), and it's a really positive atmosphere. Every week we have a contest based on a theme. This week's theme was shallow depth of field. Next week's theme is triangles. The themes are open to interpretation, and we have several wonderful administrators keeping an eye on things.
There are no prizes. The only thing you get (hopefully) is a little more photography knowledge. Winners do get their photos posted to our Learn Photography blog, so there's a small amount of glory and bragging rights to be had, but it's really not about the winning, it's about having a forum to put a photo into every week, and hopefully receive some helpful critiques.
The rules are simple. Post one photo to the group during the week, and then vote for your favorites on the weekend. The top three photos get posted to the blog.
It's a closed group, but we approve all requests, and we'd love to see you there! Come check us out!
(For those who are having trouble finding the group, try this link. I can't promise it'll work, but let me know.)