I think this forum is the only reliable site where you can sell your Bitcoins without going through the hassle of an exchange. But, I recommend you to be careful when doing any kind of trading on this forum because sometimes the scammers may take your Bitcoin and run away with it. I recommend you to sell your Bitcoin to the only ones who are reputed members of the forum and if you offer your Bitcoin for a cheaper rate than its current market rate then surely the reputed members would buy your Bitcoin without any worries.