Atleast I think it was called that. I'm usually to busy pressing "cancel" and "cancel" and "back" to get rid of the windows it changes to.
Please ban it from your selection of ads on the site. It is worse than a virus with minimizing my firefox, changing url to their site and then forcefully suggesting "YOU WANT IT RIGHT!?? - Yes, No" right in my face.
Infact if someone knew how they did it and just added a virus they could probably do some nice damage.
Ads top and right are fine, ads who minimize, change window, and give me pop ups are not.
Heck to be safe you should just ban every banner from any site with the word cleaner in it so I can have a more pleasent visit.