Transmission

It might also be cool to automatically rotate out torrents that have share ratio of 1:0 if there are torrents with lower ratios.

I think a general Auto-Speed feature would be very helpful. That way, Transmission would run near wide-open when there's not much traffic on the network, and when someone starts browsing the web, streaming video, etc... it would throttle itself down. I know Azureus has had this for a while, so I ...