Co-founder and CEO of SEOmoz, Rand Fishkin, is a darn entertaining speaker, with great insight into why and how startups should use what they have – time and energy – for their marketing efforts, and not try to outspend the big boys.

As a side note, his reaction at 50:45 just cracks me up :) Keep watching from that point onwards and let Rand convince you that from marketing point of view Google+ is not dead but actually one darn powerful tool that impacts your company results in search result pages.