[rkagerer]

Could also say it was 'solved' 30 years ago with ICQ (OK, I know it was centralized and insecure, but from a strictly user-experience perspective I honestly liked it better than anything that came since) or maybe 35 years ago with IRC.

[romeoblade]

I miss ICQ, I still remember my number. It was my first instant messenger and even after MSN IM and Yahoo IM got big I still preferred chats on ICQ.