We have recently established an SAO wiki Discord chat. This Discord chat is linked to the chat already existing on the wiki (albeit not exactly stable) via a bot that delivers messages from one chat to the other, thus allowing people on the Wiki chat to communicate with people on the Discord chat and vice versa.
So, if You are interested in getting in touch with the SAO wiki community, talk about SAO (and more!) or just want a place to hang out, but you didn't like the built-in wiki chat (or didn't notice it), please use the following link to join us on Discord. The link is only needed once - once you're in, you can access the chat at any time by logging onto Discord.