Most interesting may be that the magic number is 150 at which point there is a tendency to stop automatically following those that follow you. This is Dunbar's number.
Politico is the future of news -- catering to the insiders and the compulsives with no room for the general interest reader. Can this be right? Specialist newsletter journalists to inherit the earth?
Brilliant minute-by-minute breakdown of what actually happened including how long it took Google News to catch up. Major finding is that Google has a real problem with the real-time Web.
Excellent NYT piece summing up what actually happened with live blogging of Iran protests. One factoid -- Huffington Post's live blog got 5 million page views (and its editor was allowed to ask Obama question at Iran news conf.).
Fred Wilson in conversation with John Battelle. Fascinating about Twitter and Facebook. Also thinks blogs and blog comments are the other two of the four social media pillars. Key quote: "If you don't want to be a platform then I don't know what else you'd want to aspire to be." Talks of the need for tech innovation in DNA.