I've been using online tutors to help with online courses and it's been a great pairing. It's unbelievable the level of academic expertise you can get online for a reasonable price.

Why would this account have so many followers and so few likes? https://twitter.com/wef/status/828646291399913472?lang=en

Because the World Economic Forum is kinda important, but not a marketing-oriented org, one which doesn't give two flying you-know-whats about "likes"?

Kata is a choreography of martial arts movements. Often these movements involve an aggressor or a theoretical aggressor.

Also, after all the site is called Code Wars, perhaps she was influenced by that as well.