Originally Posted by V_RocKs

google is going through and removing backlinks from referrer lists, usage stats, comment spam, etc, where you have $x of the same file or directory... So if you just spammed 50 blogs referrer logs, you just wasted your time. With in a month they will probably remove the links from their database.

Try searching in google for something like, allinurl: referrer.php and you will be told that you possibly have a trojan installed and denied a listing of the sites.