Whether traded accounts are used for good or bad is down to your own personal opinion of what 'good' and 'bad' is.
Also, I disagree entirely with this statement. Life isn't a grey blur of moral ambiguity.
Good = truth = freedom = life
Bad = lies = imprisonment = death
So there you go. A lot of the time good and bad isn't a matter of personal opinion but is pretty clear cut. It seems to me that you ought to know lying is bad by now, and pretending to be somebody you are not is lying.
Maybe, but you need to include people from all countries, backgrounds, religions, political persuasions, etc. After taking all that into account and extracting a common denominator I bet that you'd have a pretty sparse definition of what "good" is.