[sjtgraham]

I did not mention MtGox.

[hackerboos]

What exchanges use elixir?

[lectrick]

Based on my limited googling, at least Bex.io

http://bex.io/faqs

An industry tends to congeal around a single technology for implementation (for example, Python in bioinformatics), so if bitcoin exchanges will start using Elixir, that is interesting