[BlueCat]

You have some adware, from the looks of it. 6te.net is a part of free web hosting area, which has no ads for low traffic sites. You have a banner ad on your deface. Also, I'm pretty sure that's not the default search engine for firefox when installed, I believe it's google. You should check your PC for malware and remove any nasty browser extensions you may have.

My computer is fine, No malware. It's not google. Trust me. I check my Web browser extensions very often and they're fine.