Stats: Strange Referrers
 

I noticed the following referrals in my stats I don't know them nor do I trade links or submit anything, yet they are sending significant traffic:

http://www.sensibleerection.com/entry.php/65303

http://www.gratis6.dk/main.php

Anybody know anything about these websites and how they operate?
How would I know if anyone is hot linking images.

looks like random link sites, enjoy it while it lasts