Forbes contributor Eric Jackson argues that Facebook is the next Myspace and Twitter is the next Facebook. Jackson makes the case for Twitter being bigger than Facebook in many key ways, adding Twitter will eventually catch up in market cap and revenue. One of his more interesting data points: “Twitter already has almost double the mobile revenue that Facebook has today…and eMarketer says that Twitter will do $130 million in mobile ad revenues this year versus Facebook’s $70 million.” [Source: Forbes]