The Steemit Chat server appears to be down (Steemit.chat). Anyone can confirm this. It might be just getting maintenance, but the strange aspect is that it hasn't been available for almost a day already. The browser informs the problem as an overload (server too busy) and if that is the case, there will either be an improvement of bandwidth or a possible discontinuation of the chat (for integrating it inside the Steemit beta platform, for example).
There is another post about helping the "server economy" by only maintaining certain posts in the site here: https://steemit.com/life/@gdverde/bugs-in-steemit-report