I had.

As a matter of fact, my threads were removed and discussion taken privately via our tech department due to the poster involved. Since I am not (actively) pursuing solutions, I haven't raised the same concern over the same poster.

I am not sure if said poster was/is using proxy anonymizers to register multiple handles one suspension after another. But in my non-techie eyes, what this person did is similar, if not the same, to what Dov is talking about. The one in Dov scenario is much more mean-spirited though.

I assume there must be a good reason why Dov started this seemingly techie thread in ORP, instead of Technical Issues Forum. I was just chiming in with what I knew and learned with multiple registrations of such kind without touching moderation. I have no problem if Dov prefers to pursue further in Technical Issues Forum.