I found this site to be unique in that it strongly supports everyone to give there honest opinions on submitted photos. I haven't found another site that consistently supports that. I don't participate in the forums because I found that it is packed with a bunch of whining, childish people with over inflated egos complaining about the site or other members. These same people never seem to want to discuss photography The site seems to have been abandoned by the owner though and it is in desperate need of upgrading.
I go here for one reason. To get feedback on my photos that I can't get on other sites and to practice evaluating other peoples photo without fear. If you stick with that it's a great tool. Just try to avoid the senior citizens on that site that think they know everything about life and photography. I wish the site could find a way to get rid of those folks.