The malware thing is making me paranoid, because I have played on many occasions and if it is true, then it would be likely for my PC to be infected by now.
I don't have any symptoms of a PC virus though.
I will wear a tin hat while using my PC for the next week and see if any symptoms show up. If not, I will continue playing. Do some computer malware/viruses have "incubation" periods before symptoms show up?