offeroptimizer.com has an spyware with advertising and more. when the PC is infected with this spyware the explorer open two or more windows with ads.offerotmizer.com/.....
I speak little english and I can´t explain more than this.
No, I had one of my computers infected with this adware or spyware, I dont know the name. And when I was started the Iexplorer, this window appears with ads.