Customers Suck uses VBulletin and has a chat room:
Don't know if you can see this without registering, but at the bottom of "The Heart of the Site" there is a link to a chat feature. First it takes you to a "Rules" page and you have to type in "I Agree", then it takes you to a "Login" page, and THEN (finally) to the actual chat-room.
Perhaps the owner, Rapscallion, can be of assistance when it comes to implementing this feature. I will take it upon myself to ask him about it if we still want one here.