Which Weblogs Are Best Suited for User Group Use?

An Anonymous Coward asks: "I'm preparing a proposal to my local LUG hopefully to persuade them to incorporate a weblog into their current website. It seems to me that weblogs would be better suited to the type of communication that is generally found on LUG email lists. My questions is: Are there any LUGs out there that are currently using some type of weblog application? Are there any who are considering it, or have considered it and abandoned the idea? What are the major reasons behind your choice?"