Feld Thoughts: "Once I became 'a user' [of RSS] (meaning I was no longer in demo mode, but I was actually using this stuff every day), I starting figuring out which segments each company fit in and correspondingly began to rank the companies in terms of my perception of their future potential. The segments I came up with in hindsight are not that surprising, so I'm happy to share them here (and take constructive feedback from anyone that's bothered to read this far). The segments I identified are content management systems (CMS), readers (aggregators), tools, hosting, content, search, analytics, and advertising. There is obviously overlap between these segments (e.g. a company could be in more than one segment - search and advertising are a natural pairing, as are readers, tools, and analytics)."