On: BitTorrent vs. HTTP

[shawabawa3]

The reason is that most ISPs offer much higher download speeds than upload speeds.

Bittorrent very quickly uses 100% of your upload speed, which effectively breaks the internet. The solution is to limit upload speed in your client

[offa → shawabawa3]

How much is it usually advisable to limit the upload speed, in terms of a percentage of the total?

[shawabawa3 → offa]

It depends.

My upload speed is awful (~30KB/s), so I limit it to 5KB/s

For higher speeds you can probably get away with limiting it to 50-90%