How about... MySQL runs some of the most popular websites on the internet. I know folks on HN like to nerd rage™ over the newest/obscure technology (see rust, see ocaml, see erlang), but the reality is, what works, what has mindshare, and what is easy to scale with a team.
Moreover, HN and the computer industry in general systematically ignored OCaml for many years (I'm happy to see its recent resurgence in popularity [which is to say, people are more likely to have heard the word before], but I do find it kind of puzzling).
