This plug in is a nuisance and it pops up every time I go to a new page, click on an italicized word, a blue link, everything! I found a site that initially tells you it is a free removal tool, but as you go along of course there's a $20.00 charge for the "free" tool. I don't know where it came from. Avast has never picked it up as a virus, which I understand it is. Can you help me? Also please understand I have very limited knowledge of this machine so please be patient with me.