So there is this new forum that I came across about a month ago where you and the community can exchange social shares with one another. How it works is you post an article or a blog post and the community will share it via Facebook, Twitter, Stumbleupon etc. The neat thing about it is it its not limited to any specific category. It has several categories like, photography, health and fitness, shopping, marketing etc. Like I mentioned before its pretty new so it doesn't have a lot of members for now but it still can get you some shares.

Here is the link. :)
http://www.msocialh.com/forum/