Help - strange links appearing on my index page

[Dominique]

I went to the index page of my main hub site today and noticed that a strange link had appeared. I checked it out and it took me to a survey to win an Ipod or Iphone.

I have tried uploading my page again several times and these links just reappear after about 5 seconds on random words. The only thing I have added over the last couple of days are little banners from RTA & Safelabeling, could they have something to do with it?

Has anyone else had a problem with this? If so how do I get rid of them as I obviously don't want them getting free advertising from my page.

You can see them here: http://www.youreroticdream.com/

The links move around onto different words at random.

Dominique