The ACL has created a new wiki specifically for Computational Linguistics: http://aclweb.org/aclwiki The purpose of this wiki is to facilitate the sharing of information on all aspects of Computational Linguistics. Wikipedia contains some excellent articles on Computational Linguistics, but the mandate of Wikipedia is to be an encyclopedia. This means that Wikipedia articles must be written for a general audience, not for specialists. It also means that content such as job ads and course outlines is not suitable for Wikipedia. Therefore this new wiki was created to fill a role that Wikipedia cannot fill.
Read more here.