who can't say what he/she wants under their true persona. It also breeds comtempt when alias treats provider or hobbyist like crap and then goes to see that person under their real handle without them knowing it,  perhaps just to give them a bad review or blacklist them.

I see more negative aspects than postive ones IMO. You won't ever see me use an alias. I will stop posting if I feel the need to "hide" to speak my mind.