Like Facebook, eh?

And limiting personal messages to friends on my list? But messages I send already go only to those people I adress, don't they?
I'm still not seing the point in it.
To those sending me such requests:
thanks, I feel honoured, but I will click them away, guys.
That does not mean that I have anything against one of you. As a matter of fact I haven't. I just don't see any needed function in this... well, feature, or whatever it is.