Re:

[Tim Franklin <tim () pelican org>]

> Does anyone have a very lightly used, long long low bandwidth link
> they can dedicate to The Cause?

Dummynet.  One cheap PC, two NICs, roll your own, as long as you like.  I've had fake circuits running with 2s RTT, 
applications keep doing their thing, just very slowly.

Regards,
Tim.