I for one believe the OP, and I do think it is a form of harassment. I just don't think it's a form that is actionable by the GMs, and I think it could easily be ignored. This OP's supposed stalker - and I've said before there are people who do do things as described in this community - probably knows this very well.
I do also think some of the negative posts in this thread are a bit uncalled for. Many continuing the same arguments ad nauseum. Largely, rather than discuss what SE could do better in dealing with forms of harassment it has become laden with personal attacks against the OP.