If you are a collector and don't want medium quality (what usually videos on that sites are) then you want excellent quality for movies. So you want to be a part of best world tracker and DL quality movies and also share your quality movies you have.
I know that I'm a newbie here, but I got my invitation and the whole deal was smooth and simple. Sorry for waiting my reply, since I'm a new member I have a 6min period between posts