Slack is the chat platform which the WordPress project uses for community conversations.
WP Australia runs a free Slack group, where you can connect with WordPress users in your city, and around the country.
P.S. Here’s a Slack theme we prepared. Copy / Paste into Preferences > Sidebar Theme.
#373D48, #303641, #8BC63F, #FFFFFF, #4A5664, #FFFFFF, #8BC63F, #8BC63F