Hey ip0li,
thanks for your reply! About the traffic going to google, you're right. Looks like it only happened directly after install. As soon as traffic started to build up it stopped sending clicks to that URL, at least I wasn't able to reproduce it since then.
However, one time I clicked on a thumb it sent me to a ScriptPulse URL, then redirecting to crocmovies. This would be ok if I'd use the free 1% skim version, but I have the paid one. Can you have a look at that please?