I only said it is being used, not how good the products are... And CouchDB is a perfect example - from what I saw they use Erlang for what it's good at and use

I only said it is being used, not how good the products are... And CouchDB is a perfect example - from what I saw they use Erlang for what it's good at and use other tools where it's not appropriate - that's exactly how Erlang should be used[1]. [1] Or at least Joe Armstrong says so in his book, "Programming Erlang".