An e-mail mailing list for Underworld fans who like to trade and swap material. With over 500 subscribers, rtsr-trade is the place to go for discussion of non-profit trading of rare and bootleg Underworld tracks.

Underworld is known for their exceptional live shows and rtsr-trade has collected the largest archive of bootlegs known to exist.

In 2004 when the owner of the list disappeared, rtsr-trade moved to rtsrboardoftrade: