I noticed the little bit about hiring not just engineers, but engineers who really understood social.
Actively develop culture, put mechanisms in place which help it grow at the same time the business does.
Have you heard other investors or VC firms mention culture?
Products are profession
Brand and Culture are personality
Mission, Vision, and Values are beliefs
Money is oxygen
Cashflows are airflows
Finance is lungs
Advertising and Communication are speaking
R&D is listening and reading
Strategy is thinking
People are the body
Feel free to add your own