A proposed feature
After Vince suggested to a user who had a question that it could be treated as a nice open discussion on the chat, I tried to search for it on our main page.
I found only two occurrences of the word 'chat'. One of them being a featured element on the right (which might not last forever). The other is at the really bottom (<- link to a screenshot of the home page) of the page, hidden in the middle of some other small textual elements. It is also available with a two-clicks action by the "A list of the 175 Stack Exchange sites" button. Newcomers have to guess it's hidden there.
I would therefore suggest that the chat is given more prominence, for example with a 1-click direct access at the top of the home page, or close to the personal icons, for example before the inbox:
I hope our community is able to modify this kind of feature, but I can understand if we depend on decisions of others (understand by this, 'external' people from the GIS community).