The most common thing to happen to people who do follow these `techs' advice is that they usually end up being part of a bot network with a computer riddled with spyware and keyloggers. I have `played' with one just to see what was going to happen (on an old computer being torn apart for parts soon after) and they send you to a `online virus scan' site- which is nothing of the sort of course. It had a brand new fresh install of xp, and they prompty loaded several nasties into it, including a remote vpn application (that means of course they can then get back into it whenever the machine is online), turned off the antivirus (free avira) and deleted it, then installed a reather nice imitation of a fully paid up version of AVG- it looked just like the real thing was there and running, apart from it was not actually the real thing and didnt actually do anything except make it look like AVG was there and running!!! It also had a go at Mbam when I tried to install it afterwards, had to sneak it in under a different name to get it to install, and it came back with a rather large list of nasties. I actually have them all written down somewhere, but as I am in the middle of moving house ATM, I am not sure exactly where it is, when I move and get unpacked again, I'll put it up what exactly it installed and the name of the website (it was a rather easy to spot fake `www.microsoft.com.(random letters and numbers).ru' type looking one from memory- it resolved to russia anyway, I remember that. All in all, it was a rather nasty piece of work in all