I noticed one of my games have been released on an illegal site where they give the game away to people to play for free (so nobody buys it from me anymore ...)  And I can see from my analytics there are a lot of click-troughs from that site to my store listing of that game here.

Would it be possible to block those links from your server?  To block links from known illegal and cracked sites?  They could still get here doing a search - but at least block the direct links from Reddit Cracked and the file share sites?