CloudKnow

Craig Hockenberry: Twitterrific iPhone/iPad app development

Maciej Cegłowski: The Social Graph is Neither

Paul Tyma: Startup Ideas – Part 3

Interesting presentations from Velocity Europe 2011

Ivo Teel & Laurens van Hees: Taking on the Performance Challenge (video)

Artur Bergman: Full Stack Awareness (video)

Jon Jenkins: An Overview of Amazon Silk (pdf)