Hubski now hosts its own chat: https://hubski.com/chat
Once you have earned a hubwheel or have been promoted, you can participate in chat.
Chat does not respect Hubski markup, and all html is scrubbed. Thanks to kingmudsy who demonstrated the wisdom of this choice by totally breaking chat with JS in the 5 minutes that allowed html. :)
Chat comments are not stored in the database, and are wiped if I ever restart the app. Also, currently only the last 180 comments are saved.
A link to chat can be found in the bottom menu.
As always, feedback is welcome.