Well.... it is recommended if you are trading or receiving invites on forum like this to copy and paste links to signups rather than direct click as it will tell the staff where the site traffic has been redirected from.

Though I personally never recommend joining a tracker you've been banned from.. you can reset or even request your ISP to issue a new IP address. Just unplug your modem from the wall for say 5 minutes and it should issue you a new IP. Though it may vary from provider to provider, good way to check this is trial it. So check your IP now and write it down.. unplug the modem for 5 minutes then reconnect the power supply... check your IP again and see if it has changed.