A true friend would not ask for any material thing; I'm pretty sure a simple thank you and a warm hug would suffice and would be very much appreciated by those who listens.  
Having a "fee" for such a simple act would only give someone a notion that you are only doing it for the money and that you're not really there to listen to their problems wholeheartedly.
[/quote]
well okay fair enough, as of now i accept hugs too lol