If you mean the pay for tech support company at about £10 a month, (or any of the pay for tech support companies) then legit or not I don't consider that necessary for a home user. These firms take remote control of your pc and supposedly 'fix' it. Smacks a little of those scam phone calls you get that say they are MS Tech Support and have detected a problem...
If you are having a problem with your pc mcheathen, then you could start a thread on here and get advice for nothing.
The person with the problem found they link while trying to get into her Hotmail account - but I can't find it when I go to Hotmail. Her computer is going slow and she got locked out of both her Facebook and Hotmail accounts.
E-Mobilizer Ltd did a scan of her computer and said there was a trojon on it and told her that a payment of £100 would get it removed and her system would be secure for up to one year. I told her that it is likely to be a scam, but she is adamant that it is on the level.
I did a Google on E-Mobilizer Ltd and ligit company does show up, but not sure that this is the same one she got. She even phoned them up from a number she got after clicking on a link.