Facebook has become cheapo?

I received few weird messages in facebook. Usually, I will just ignore them but some of them, I replied for the sake of being nice.

Some can get over board. Some are just lame.

These are some that I wanna share with you here.

First of all, what makes you think I live around Sydney?
Secondly, I already have one hella good lover so I don't need you to pleasure me (if you are even a man)
Thirdly, this is not high school anymore. I have stopped chatting with strangers since form 4.

What are those? Pick up lines gone bad? Or these people are just friendly?