After a long while of not having an official chat, we have now launched a Discord server, a cross-platform chat and voice system which works over web browsers, a dedicated program you can download for Windows, and apps for iOS and Android. We have integration with this forum, which means only members of the forum will have access to it, and when you join the server your Discord account name will be changed to match your current board name.
To join, you must have a Discord account registered, which you can then link via account settings.
Once these things are done, click the chat banner in the left sidebar, or click this link.