[Air-l] Sociolinguistics in virtual communities

Hi, I've suddenly discovered that my thesis needs a huge injection of sociolinguistics to pull it together. Can anybody recommend (a) an accessible overview of the field, prefereably written in the last 5 years, and (b) anything that's a "must read" on linguistic communities? I've been doing a part/obs case study of an internet community, so anything with specific reference to linguistic sommunities in that kind of context would be particularly useful. Thanks -- Urban Theology Unit, Sheffield http://cybertheology.org.uk Views expressed in this email are my own and are not necessarily those of the University of Sheffield or UTU.