Re: Windows 7 free (beer) malware protection
Meh, I just use the anti-malware method of "Don't do anything dumb". It's incompatible and ineffective with Windows XP, but I've found it works just fine on Windows 7.
If you absolutely have to have something, the Microsoft Security Essentials has tested very well against commercial anti-malware programs.
But yes, Windows Vista and upwards are decently secure on their own.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.