There have been numerous trackers that have been hit by this hacker in the past day or 2.
He takes over a Sysops account and sends a Mass PM to all users, stating that if they donate $50 they will receive 1TB of upload onto their stats.
This is obviously false information, but quite a few have been caught out by this and donated to him.
Just be careful if you donate to a site, click the Paypal Logo and make sure the proper e-mail is there that the site usually uses.
I have heard he has hit quite a lot of sites.
This is just a heads up to be careful, there is no source, apart from me and what i have heard over the last 24 hours or so.