Nearly a million users, and no spam or trolls - RussellBeattie.com: An interesting look at how the \"public IM\" utility Twitter has kept itself (mostly) free of SPAM and trolls.

Apple COO Discusses iPhone Exclusivity, SDK, and Unlocking - Mac Rumors: More complete notes of Tim Cook's talk yesterday, including a link to a quicktime stream of the entire talk.

The Rise of the 'Citizen Paparazzi' - WSJ.com: Crowdsourcing comes to Paparazzi. Money quote: \"What's more, they [professional paparazzi] gripe about rude and particularly aggressive behavior from some of the amateurs – no small allegation in an industry long known for its anything-goes tactics.\"