THRDWRLD (for "Third World") was an email list run by the Association of Third World Studies for several years in the mid- to late-1990s (an announcement of the list was dated in June 1994). I participated in the list, partly in the line of work on an international development education program. There are apparently no archives extant, which is a shame as it was for a brief while quite active.
A quick Google search of the internet came up with a single announcement that I reposted, which was then reposted to another list, pen-l:
- [TECHLIST:16] Invitation to TechNet-EDI-WTO Think Tank, April 27 to May 15, 1998 (fwd), Wed, 8 Apr 1998