Board advance search
Just a quick suggestion. When searching board posts, with the search bar, I would like to be able to search for words only in the question/translation, for question boards, because sometimes I only remember a few words of the English question/trnaslation and since they may be words used in the body of possibly every post made, it makes it hard to find things.
Also since the stream holds everything you do achievements and all, along with that of all your friends, its not a good way to search for old posts you may have made. So another way to advance the search capabilities would also be, to be able to search by user.