I recently my rankings for http://www.top-10-dating-reviews.com (some adult content) drop off a cliff. Google tells me there's no manual penalty therefore it might be algorithmic. I don't know why my rankings went but I think it could be that I added A LOT of category pages pulling the same content from posts and this could have caused both duplicate content issues and too many on page links causing an algo penalty.
Ive deleted the categories and therefore fixed duplicate content issue (perhaps you guys could check out the site and see that you agree with me) but rankings have not improved even thougo most of the pages have been recrawled.
I read somewhere its extremely hard to recover from such a penalty so should I move my site to a and domain and redirect all urls? I can't think of another solution.
Any help appreciated!