This is a really great tech presentation and it reads very well too.<p>It's interesting that it seems Twitter (and to some degree Facebook) are tackling really interesting problems that span every layer of technology in a way we haven't really seen since the early days of Google.<p>As a social graph becomes more integral to the applications many of us build, Twitter is a great example of what problems we may be facing down the road.
The download file is a keynote file. Not readable on windows or linux without major pain, thanks Apple for making me feel like in the 90s all over again with your closed file formats.