this is out of date - I'll get around to adding the modern crop of weavers once I retire and can find some free time
http://www.guntram.co.za/tabletweaving/ Guntram's tablet weaving page - home to GTT, a PC based computer program that will help you design and test out your tablet weaving patterns in advance. Plus he does some marvelous brocade work.
http://www.stringpage.com/ Phiala's String Page - Phiala has done an excellent analysis of the theory behind tablet weaving. Plus she does some wonderful 3/1 twills (which isn't as good a technique as brocade :-)
http://www.weavershand.com/ Weaver's Hand - One of the longer running tablet weaving sites which contains an extensive list of links.
http://www.tabletweavers.org/ TWIST - tablet weaving magazine - if you are interested in tablet weaving, then you should be a subscriber (and then you should write some articles for the magazine). Also links to buying books by Nancy Spies and Peter Collingwood.
http://www.cs.vassar.edu/~capriest/textileres.html Thora Sharptooth is a well respected Viking re-enactor who has written some nice articles and has a good tabletweaving bibliography.