Friend requests - give me a reason

I receive hundreds of friend requests every year. I just accept a few. Why ?

If someone is posting interesting stuff or good blogs, I put this person on my subscription list.

The friend list is supposed to persons I have things in common and I keep on communicating in personal mails.As I can't talk to 12.000 people in the few hours I spend here, I will keep the number of friends small.

So if you send me a request, you better give me a reason. Or even two.