Data analytics firm Mixpanel is tracking 45 billion user actions per month. The more actions they track, the more revenue they make. Mixpanel knows what customers want because of these often-requested actions. The company’s revenue is even based on these actions. Andreessen Horowitz invested $65M in December, which put the company’s valuation at $855M. Meerkat creator Ben Rubin recently showed Mixpanel charts as a way to prove his company was doing fine even after Twitter-owned rival Periscope launched.”]