There's also torrenttrader.
And as roadrunner said, it's really time consuming. If you want it to succeed, you need users and to have users your tracker needs to be successful. You know what I mean?
Also, since trackers usually dont make too much money, it will be hard to find good moderators and administrators. Worst than that, now and then you'll need to give instructions or correct your staff's behavior. People dont like to be commanded if there's nothing on the table: no money, no 'recognition' cause the tracker is small
When and if your tracker gets successful, things will get easier. You can get good members for your staff a lot easier, more members and maybe some money. Until then, you'd need to push the rock up the hill.
Been there, dont that. Some broken friendships, some money spent but I dont regret it. I learned a lot of PHP and CSS tweaking the tracker and, maybe, more important I learned a lot about people. How they behave under some circumstances, how to make them things they didnt want to do without even noticing it, what motivates them and... this looks like Criminal Minds shit, but it's real, almost all the uploaders had the same 'psychological' profile.
And... it's not easy to organize a group of 2000 people without:
» rewarding them/masturbating their ego;
» punishing them