Onset Ventures Raman Khanna on online ad market

In the second part of our interview with Onset Ventures' Raman Khanna, he talks about targeting ads to airline passengers, user engagement and how MixerCast, one of the companies he's invested in, gets some people so jazzed about their service that they spend hours mashing up online ads with other content.

In the first part of the interview, Khanna talked about early-stage valuations.