P2P Gnutella GET question again

["acid" <acid () freenet am>]

Hi, I saw thread in mailing list arcive, but don't get it. When exactly
I'm getting this message? I suppose when Gnutella Server is trying to
connect to my host using port 80 ? is that right?
 
> From the other hand the firewall software(Tiny Personal Firewall) I'm
using is showing me that the system is trying to send something to
outside, so now I'm totally confused.
 
What is going on in real ?