Unknown Gnutella-metadata in Limewire (like Bearshare?)

Hi there,

I wanna ask if Limewire did modify the gnutella protocoll, adding some proprietary and undocumented metadata?
For example Bearshare did this twice (QOS in QueryHit and "New-Bearsahre-Testing-TTL1") and I'm not very lucky about this development. I agree the gnutella protocoll needs various improvement and found a lot of articles on internet (e.g. at limewire.com).

I think undocumented features are slowing down the further development, you'll find my argumentation in another thread:
http://www.gnutellaforums.com/showth...=5261#post5261

I would be very happy about further information (any other known client adds proprietary information to the protocoll?) and serious discussions (technical and no emotional flames like xyz sucks plz). Thx!