Do a search in Google on wordpress and anyresults.net and you will see that this is a common problem and you are still vulnerable if you are on the latest version.
There seem to be a few variations and my case seem to be the same as described here.
This is pretty scary. Spammers and hackers seem to be going out of control. I hope the owner of anyresults.net is investigated. I seem to have spent most of this week fixing script related problems because of increased security from Dreamhost, which of course is a good thing, but it is taking time away from writing content and marketing my sites.