Facebook 's ( NAS: FB ) recent debacle of an IPO was shareholder unfriendly right out of the gate; its dual-class stock structure gave young CEO Mark Zuckerberg the majority vote, rendering shareholder votes pretty toothless. Google ( NAS: GOOG ) recently moved to enact a triple-class stock structure, weirdly following in the footsteps of social gaming company Zynga ( NAS: ZNGA ).