How to send pics to someone thru FB with iphone?

I want to send someone some pics on Facebook, but i don't want everybody else to see them.
i know that you can make your status updates avaible for some people only but it doesn't work with pictures? And you can't send pics in the chat with my iphone

For you:

http://heresthethingblog.com/2011/10/31/send-photo-iphone-facebook/
pa