This Interweb can be a murky place sometimes.
We all [presumably] know about Trolls – those people who just try to flood a site with inane comments in an attempt to piss off the site owner. For some reason that might be understood only by a five year old, they seem to think it's hilariously funny. They don't bother me though – that's what the Delete button is for.
Then there is the other type. The Stalker.
Now I happen to know a woman who runs a site and somehow she has picked up a stalker. I have seen some of his shit and it really is nasty stuff. It started off with him professing everlasting love for her and when she failed to respond, the comments became nastier and nastier. They went from professing love through pathetic pleading and then the shit started. There is the name-calling, the threats of suicide and is now descending towards death threats.
I know little about the Stalker. He lives in or around the Rio Rancho / Albuquerque area of New Mexico [using Verizon Wireless]. He is barely literate [who the hell calls a woman a "kunt"?] but he is really fucking persistent.
When I say persistent, this fucker discovered my friend's Facebook account and from there, her Instagram account. He then started "befriending" her Facebook friends and then posting nasty shit on their accounts. He has scraped her Instagram account and now has all her family photographs. He even found an image which inadvertently showed her mobile phone number, and is bragging that he'll use that.
My friend isn't bothered by the implied death threats, but is very concerned about the messages being sent to her friends. As a result she had to contact every one of them and then shut down her Facebook and Instagram accounts though he is still hassling her on her website. I have had to take over moderation of that as most of his messages are [to put it politely] upsetting.
Of course the glib answer is to report him, but unfortunately it isn't that easy. If he were relatively local it might be a different matter but trans-Atlantic is a different ballgame. Probably the simplest answer is to play him at his own game and start sending him threatening emails.
I'd be good at that.