Well, I share about 5 Gig of files (only complete and useful stuff - this is also very important!), but it's not a big deal to do so if you're on a LAN connection and uploads running with a total speed of ~250K don't affect your own download speed. I can understand people with slower conections who don't want to share - I would do it neither if it affected the speed of my own downloads! I don't have too much of a problem with the fact that I'm playing the role of a fast server for others as long as I can also get some good stuff (btw. right now after 35h uptime my netstatistics says "bytes out:9.752.491.172", "bytes in:1.950.241.450" ...).