@msolga,
Ms. Olga, perhaps part of your problem is that real-life concepts like "bullying" and "stalking" don't universally map to cyber-life the way you expect them to.
Take bullying: on a schoolyard, bullies subject their victims through physical violence, or credible threats of physical violence. How does that map to cyber- life? How does one swing a fist online? One doesn't. It's all just words. Nobody can hurt you in an online community unless you let them -- unless
you give the trolls standing to hurt you first. So, don't! And don't worry about them ruining threads. Threads are not schoolyards, and you are not a teacher here. If a thread of yours is still ruined after you've ignored the trolls, consider PMs discouraging the reasonable people from responding to them. "Public" interventions won't get you anywhere.
"Stalking" is even more complicated. It means that somebody is following you around in your private life. But A2K, despite it's family feeling, is not your private life. Everything anybody says in a thread here is published for the whole Internet to see, and hence for the whole Internet to comment on -- positive or negative. By your standards, I'm quite probably a stalker myself. I have a few favorites here on A2K, of whom I read more or less every post they write. If I did that in their private, real lives (listening to every word they say), that would no doubt be stalking. But here it's not. Because posts are publications, reading and responding to every post of poster X is fair game for me. It's as fair as it would be if you read every column by your favorite commentator in your newspaper -- and wrote a letter to the editor about it. If this thought makes you uncomfortable, you need to reconsider what, and how much, you're posting here.