As far as I know, setting upload speed to zero disables the limit. You can set it to be very low but not zero.

pwg 2 hours ago | parent | next [-]

That is client dependent. On rtorrent, there is a separate "off" setting for the speed throttle that means "no throttle" with the result that "zero" actually means "no uploading".

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gzread 2 hours ago | parent | prev [-]

You can patch it so zero means zero.

	▲	Etherlord87 an hour ago \| parent [-]
		I think it's a fair argument in the context of big corporations using the technology.