You know, I have always had this argument about SA torrent sites wherein due to the constant politics and cat-fights between different trackers, the local p2p community, instead of being fostered, is divided. All these torrent sites seem to have this retarded elitist ideology about them, seeming to think that a VIP torrent site is going to do as well as one that is open and fostered by the community. Sure you get rid of a lot of noobs by requiring invites, but at the same time just think how many brilliant seeders and uploaders they are missing out on by being so completely snobbish.
And no, before anyone asks, I am not spiteful due to not being invited; I have several accounts with local torrent sites, only I am at the point where I would rather download from international trackers rather than deal with the childish crap from local tracking sites.
Seriously, the only way local p2p is going to flourish is through open (hell, even community-moderated) tracking sites that people can gain access to without having to beg for it.