I have tried this myself and it works...and I thought of it, too....a foolproof way to hide IP addresses and cookies from link, so free users will not have to disconnect, delete cookies and reconnect.
In Internet Explorer -
1) Tools/Internet Options
2) Privacy, Sites (bottom left hand corner)
3) In Address of Web site box, type in "rapidshare.de" and hit Block.
4) Below said box you should see "rapidshare.de. always block"
5) Apply, Ok, close that active window etc.
That's it.