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I don't mean to sounds skeptic when I say this: could you list some of the software (or teams) that use Erlang?

An Erlang system has been created which has nine nines of uptime[1]. That is a stunning achievement.

Riak, CouchDB, RabbitMQ, and SimpleDB are written in Erlang. These are mission critical, mature projects.

Also Facebook uses Erlang it for the back-end of their messaging tool and Whatsapp uses it on the back-end as well.