An Ethical Conundrum

So apparently, having a mantra on your computer works just like a traditional prayer wheel. (Reputedly okayed by the Dalai Lama hisself!)

So the question is: If somebody wrote a virus that didn't do anything but propagate itself to new computers, but that had the words "om mani padme hum" in its code, would that be a net positive or negative, karmically speaking?

P.S.: Your browser cache is now a prayer wheel!