I don't think it's inappropriate to provide context to people that might not be across Yandex. HN is read by a large volume of people from diverse backgrounds -

I don't think it's inappropriate to provide context to people that might not be across Yandex. HN is read by a large volume of people from diverse backgrounds -- not always CS and/or startups. I would not be surprised if some subset of those people hadn't heard of Yandex.