Freeloader button?
 

freeloader? kind of gives file sharing a new meaning,Doesn't it?...( does it work?)........Thanx Mad Hatter

The slider at the bottom has no effect, it was disabled some years ago. But the other option does seem to work. But still, I don't believe there's any definitive way to check. Checking uses up bandwidth & if this is made a requirement would slow the network down considerably. Some people make the severe mistake of thinking browse is a method. But this is simply not true. One minute you can't browse someone, 15 mins later you can browse them & they have several thousand files to share. So ... never think of browsing as a method of checking for freeloaders!!! Browsing is affected by too many factors such as available slots & bandwidth, etc.

BTW my personal testing using the minumum no. of shares, etc. setting did definitely seem to have some effect as to who was uploading from me & what they were uploading from me. Changing it from zero to 25 or 50 seemed to bring out different types of downlders.