Been using Reddit since launch. Somewhat nervous that the new people running Reddit will get overrun by the corporate overlords now that they see the "hockey stick" traffic charts.
I can see some bean counter doing the math:
Slap 4 teeth whitening ads on every page
= 4 ad impressions
* 1.2 billion page views
= 4.8 billion ad impressions
* $0.30 - $0.50 eCPM
= $17 - $28 million/year.