Slack is designed as a community-based chat forum but you have to become a member to use it. It is organised by workspaces which are like individual sites (SSI is its own workspace). Within the workspace are channels. We are currently chatting in two channels - one for 'general' chat i.e. not specific to a game and one for 'game-chatter'.
To get started is very straightforward.
- Click this link: https://join.slack.com/t/seattlesportsinsider/shared_invite/enQtMzIxMjAz... (taken from G Moneyball's link on SSI a few days ago)
- Choose a username and password
- Start chatting! If you desire, I believe you can re-read everything that's been written since we started on Tuesday - there's some great content and mini-discussions in there as potential sources for new posts.
One of the great advantages of Slack is the ability to insert rich media like URLs, Twitter links, videos/sound etc. Has a great UI too and has a mobile app so you can stay connected easily when you're on the move plus a desktop app if you prefer this to the website version although there's not much difference visually between the two.
Will look at the link you've shown above when I get home from work later and provide feedback as requested.