Really impressive stuff. When I saw this I thought about the games I play and realized they don't do any of this, and suddenly they feel sorta primitive!

You know what, if Erlang is good enough for Facebook for their chat system, then it's damn well good enough for Twitter. I think they're already using ejabberd, but perhaps they should be using it for more of their infrastructure.

"Another area I have seen many issues with is threading. Languages like C# and Java make threading a reachable concept for the programming masses." What? How is threading in Java or C# any easier than in C/pthreads, except on a superficial basis?

It's nice to see a lot of knowledgable people breaking down Ted Neward's uninformed FUD about Erlang. Erlang's core strengths are fundamental to the design of the language and its runtime, you can't simply shoehorn it into other languages with a library.