fl1po

Looks like the it was removed because it was mostly opinion-based and didn't reflect the "engagement" word in the title:

https://ru.wikipedia.org/wiki/%D0%92%D0%B8%D0%BA%D0%B8%D0%BF...

There's literally a whole block about this on the main page:

https://ru.wikipedia.org/wiki/%D0%95%D0%B2%D1%80%D0%BE%D0%BC...