Paul would like to know if there are chatrooms for tech questions? Leo says that the TWiT IRC Client runs 24/7. It's a general chat focused around Leo's radio show and podcast. But you can ask questions there, too. And there are IRC chat threads for just about any topic in the world. Just do a google search for "IRC (topic here)." Or (topic) Chat Channels. Another option is a Dischord chat.
Rachel is blind and needs help with the TWIT chatroom. It's not very accessible. Leo says that TWiT has a chat moderator who can work with the blind to set up their screen readers so that she can keep track of the conversation. It uses IRC and she'll need a fully accessible IRC client to do it. TWiT's moderators can help with that.
Dean wants to create his own chatroom. Leo says he uses IRC (Internet Relay Chat). It's open source and simple to use. TWiT has its own server, but he can use it with FreeNode or any of the other servers that an IRC channel can be established on. There are IRC clients for computers and smartphones as well. Leo suggests going to irc.twit.tv to ask questions about it.
Danny recently got banned from TWiT chat because of something his kid wrote. Leo says that TWiT bans offending users according to IP addresses. They are very careful to keep the chatroom family friendly and there's some specific rules. Generally, though, the ban is temporary, so just be patient. There really isn't an appeal, either.