And once again we come to a post on co-author Don Tapscott's Wikinomics: How Mass Collaboration Changes Everything. This Wikinomics series has just two posts to go; savor it while you can. Don Tapscott's thesis in this chapter is that we're in an era of what I choose to call "mass platforms"–where a platform is defined as a collection of data/functions provided cheap/free to programmers who want to create new, possibly unexpected applications on top of it. For example: Housingmaps, created by Paul Rademacher in 2005, combined map data from Google with housing data from craigslist. Using his website, you could see at a glance which houses were for sale in your chosen neighborhood and what the asking prices were....