The reason for using different aliases from niche to niche comes down to the basic psychology that:
“You Cannot Be All Things To All People...”
Let me show you what I mean:
Here's what happened: Once you decided to seek help with your problem, you came up with a mental list of the people who would be willing to help you.
Then you quickly disqualified the ones you felt weren't experienced on the subject you needed help with... leaving you with a clear picture of the person you would seek help from.
This filtering process is a survival instinct developed to help us out of dangerous or complex situations quickly -- before the problem gets worse.
That's why we create aliases for each new market.
It isn't about being deceptive... It's about being accepted.
If your products are good, and your service is responsive and fair, then...