Hi guys
I release now that I do actually get a lot of these tiny icon things when visiting lots of websites, and that one looks like part of the 'Left 4 Dead' logo whose site I quickly visited a bit back...But even restarting and going straight to my home page Google..the damn thing is still there. I guess it's nothing to worry about, it just freaked me out a bit at first. Ctrl+shift+r doesn't do anything but I'm about to wipe my internet temp stuff so that should help. Thanks everyone.