Hello testers. This system has the potential to replace Groups, Wiki and maybe even Slack. Please give everything a good prod and poke, and report your findings. This thread has been set as the Banner, which means it shows up everywhere until you dismiss it.
This topic is now a banner. It will appear at the top of every page until it is dismissed by the user.
Huh. I didn’t realise that Discourse was founded by the same guy who founded Stack Overflow 
This topic is no longer a banner. It will no longer appear at the top of every page.