This chart remains me to review a post from last year here at 7daysandmore.blogspot.com. I wrote there:
It seems to me the third wave of Web 2.0 is coming. This wave is not focused on blogs, Wikis and photo or video sharing (Web 2.1). It's also not longer only microblogging, social bookmarking and (community-) mashups (Web 2.2). It's now about lifestreams, collaborative tagging and filtering, streaming live information from mobile devices, widgetizing information (Web 2.3).