how to refuse someone asking to add him on fb?!?

[908]

on my facebook i have approx 3000 or something friends and mostly now i don't check my requests anymore . fb doesn't allow more than 5000 friends and i've taken much time to reduce my n0 of friends.
so sometimes there are people msging me to ask me to add them!. but i don't want to.
how can i refuse them?
it looks a bit rude when i say i don't want to.

if you're going to say anything stupid, please, don't reply then.

[Courtney]

block them...they wont have contact to you and probably wont take it personally

[Joshua Bradley]

depends if you dont know them in the non FB world! I will only add people i dont like that i know personally and just ignore anyone else! Usually they wont message a second time but if they do block them or add them have a chat then delete them! If they have a similar amount of frineds they will never notice

[ticc]

if you don't know them,you don't have to answer them...

[Drake B]

send them a message back telling them that you don't want to be there friend. Sometimes you have to be forceful. If they can talk to you in real life, tell them that FB is not so important that they need to be nagging you about it every time they see you.