I think this is a very important topic as the major developers are considering adding flow control to limit the number of query responses. I think this kills one of the best features of gnutella and will make it nearly impossible to find what you want.

Instead they should reduce query traffic by making searches (not filters) more powerful. Over at the GDF in a related thread (http://groups.yahoo.com/group/the_gdf/message/5129) I suggested adding the following to the query:

-boolien operators (+, -, "", ect)
-file size parameters (min and max)
-file type
-meta data (bit-rate, resolution, codec, ect)

I would encourage everyone to let the developers know that limiting search results is unacceptable!!