How to be BEWARE of loser people like these?

[highgrass862]

OK, so this guy had been trailing his Yahoo, Facebook and Twitter account at every answer in Yahoo answers, so I sought to link to him. When I did, first we have had a nice conversation. But the things eventually got strange, when I told him if he lives in city ___, to which he answered "How did you know", "You are witchcraft er", and said me he does hates stalking. When I eventually asked him what stalking meant for him, he replied "gathering knowledge of his without his presence". And fleeted long theories of his on "Privacy". HE said he would "let" me view his page, but was protecting for sake of his friends and himself.
Useless conjecture, because I have so much to do in life than vandalizing his account or others. OK, I thought several people are shy, so he might be. And true, why on the first sight would I immediately trust so much to a stranger.
But then eventually his behaviour began to change. He refused to believe that I wasn't a stalker, and a simple 17 year old guy, blocked me from Face Book, Yahoo answers and stuff. So what? nincompoops like him trailing their IDs everywhere and rejecting people is common-a stint for online fame from unknown people.
So I mailed him to just ask him, as of he should straightforward mention me he wants no further correspondence, and I never feel bad-there are loads of people I would meet, better than him probably. but this guy BLOCKED me, and didn't reply me at all.
Finally, I went to his twitter account, and just demanded for a YES/NO. BE straightforward, I just told him. But he is afraid to reply to me, and he blocked me there, too.
I am not at all saddened/offended-idiots like him I would always find in every corner of world, but I want to ensure that from the next time I am able to identify "stint" and egoistic, afraid guys like them, so that I don't end up wasting my precious time on such idiots and b**st**rds.
Pleas give me subtle hint to identify "stint" and egoistic, afraid guys like them.

[Darcy]

Your moron bone is showing.

[Janie]

We are all stangers here. Why do you care?

[Slim Shady]

you disgust me you stalker.... get a life

[Emis]

So what do you do in your free time?

Just don't get so involved in other's lives.
you crossed his personal space boundary. (Yes, when obviously he does not give one to others!)
Maybe he is afraid you know to much and can expose him!

[Luv Karakoti]

Dude, Forgive and forget! Never befriend people like these, learn this as a lesson in your life. These Westerlies probably don't know what the hell stalking mean, because those idiotic, non friendly Westerlies have a prejudice against us...Respect those you have and forget die-hard publicity bastards like him
I know, you being my schoolmate are quite nice guy
P.S. Why did you give my Facebook and Twitter account of mine to him?
You vandalized it again , Mr. S
God Bless Ya!