Voice chat room
This can mean poor latency for users located elsewhere.
Jason Citrons track record shows a pattern of starting a business attracting large investors then walking away with the company bankrupt or sold and his pockets filled.
20 million dollars would have produced a product light-years better than discord, something fishy is going on.
Discord is literally the dreams of every gamer/community manager - it has to be easy, it has to be usable everywhere, it has to be good in voice chat performance, and it has to be clean and modern.
Holstering more than 1M users, at least 10 or more Open Source Communities, ranging from Fedora, XFCE, Open SUSE, Vue.js, Discord is the 21st century's answer to a IRC alternative.