It may be that most physical stalking is not as dramatic as your experience. Guess that depends on what is considered stalking.
[e]motional responses to the stress and trauma...includ[ing] high levels of ongoing stress, anxiety, fear, nightmares, shock and disbelief, helplessness, hyper-vigilance, changes in eating, and sleeping difficulties
strikes me as hyper-sensitive, especially when the article says people are most troubled when the "attacks" are anonymous. People being nasty in a blog can cause hyper-vigilance? Really? That's pathetic. How are these people dealing with the normal conflicts that are part life if some unknown person saying something mean about them on-line throws them into such distress?