[amirmc]

What's creepy? That he described what he did or that it's possible to do now (quite easily, in fact). Your comment implies the former but I find the latter more interesting.

Do you really think this the only guy or girl who's tried this?

[EliRivers]

It's always been possible to stalk people and gather lots of information about them in order to increase ones chances of striking up a romantic relationship with them. it's always been possible to do this with many people at once.

It's always been creepy.

"Do you really think this the only guy or girl who's tried this?"

How did you get that? He didn't say anything like that. He pointed out that this is creepy. Just because people have been creepy for as long as there have been people doesn't change that.