Thanks for the reply.
With a rule of thumb recommendation of 5KB/sec/slot, it's easy to come up with a reasonable setting for upload slots and speed. Does this take into consideration the possibility that I may be one of many hosts uploading the same file to the same user? I s'pose if there were 10 hosts all giving 5KB/sec/slot, that'd be pretty nice for the downloader. Of course, 10KBx10 would be twice as nice.
FWIW, I did read the sticky note about "optimal performance", but that thread seemed to be optimizing download speed rather than upload efficiency. My question was slightly (ever so slightly) more altruistic.