I never know about steemit chat until the day i decided to test run a programme which was to send SBD for an Upvote by Jerry Banfield. I had sent him one sbd with a link to one of my blog posts in the memo space which i later got a reply from him in the comment section of that same post, saying that i should finalize the transaction by upvoting him in as witness in the steemit chat which i did and later got an upvote from him. Since then i kept low on that, trying to study what witness was all about and thanks for this post as it has gone a long way in answering some of my intent questions on what steemit chat and steemitchat is all about. I will still do more diggings to find more and how it works.