Please help ???

First of all thanks for such a nice and wonderful forum. I am here to ask a doubt, if any one can solve my problem then its very helpful for me. The thing is how can i find the mail id of a fb member. Its not in a public view mode. Plz help ?

id or email address? only a very small percent even have access to email at this time.

i only want the email address, i dont want the password of that fb account