Contact them for help with particular issues or problems. A message board or bulletin board lets you post a message for other people on the Internet to read. The messages usually ask a question in the hope that someone can provide an answer. Answers can be posted on the message board or emailed directly to you. A mailing list, list serv, or MajorDomo sends email messages to and from subscribers.
Every subscriber gets a copy of the message and can submit a reply.
Only subscribers see the messages and replies. Some chat rooms also schedule guests to talk about a specific topic and to answer questions. There must be at least two people in the room before you can chat. Sometimes you have to hang around the room for a while until someone else shows up. Some support groups also provide message boards, mailing lists, and chat rooms as part of a larger site.