The question has come up from time-to-time about archives of the lists online. The two largest lists I host, Scots-L & abcusers are actually archived by mail-archive.com, which is a service provider by the folks at VA Linux. It has a very nice search feature as well, plus it is free. I think it is worth checking out:
http://www.mail-archive.com/ Toby Rider Posted to Scots-L - The Traditional Scottish Music & Culture List - To subscribe/unsubscribe, point your browser to: http://www.tullochgorm.com/lists.html