Recently, I created the SS13 Hub Discord server, intended to host members of different SS13 communities, and bridge the gap between them. An alternative of sorts to /r/SS13, hopefully less overwhelmed by shitposting or drama.
Every SS13 player is welcome, no matter their preferred playstyle. Each major server, including Polaris, gets its own category and roles, while being able to chat with general SS13 community in the main channels.
Additionally, it's a good source on information on the major servers, with useful links to help you find whatever you're looking for.
Here's an invite link, if you wish to join.