On a more serious note, there's a lot of difference between a stalker and someone who is simply being persistent about their interest in you, like the article was about. The article was pretty good about dealing with boundaries and such. There were good points to consider.
I think that it's important to learn the difference as well as the justification for the force continuum. I've heard too many well meaning people go way overboard on the issue. On the other extreme, I've advised those who were on jeapardy of life, who received threats from, let's just say, powerful people of means and motives. Proper evaluation, distinction and the proper training for appropriate defensive measures are key.