The SLWIS conference page has been updated with this conference in October, 2009: Language Learning in Computer Mediated Communities. The deadline for submission of session proposals is March 1. Here's a description of the conference from their webpage:
"Once, computers were seen as thinking machines or electronic tutors. Now the computer has become one of many devices that people use to form virtual communities of all kinds. In the field of language education, computer mediated communication (CMC) enables students to interact with one another free of space and time constraints and to participate in communities of learning with their counterparts in the target culture. The Language Learning in Computer Mediated Communities (LLCMC) Conference explores the use of computers as a medium of communication in language learning communities."