Steve Sounders has put up the test for his stanford class on website optimisation.
There are some really challenging questions in there.

Why were ETags introduced in HTTP/1.1?
What are four techniques for reducing cookie weight?
List five techniques for making selector matching faster.
Why do ETags (with the default Apache and IIS syntax) degrade performance with regard
to proxy caching?

Kudos [...]

ProjectX is heavily involved with Summer of Code and we’ve just release a number of videos on blip tv
The videos are featuring:
John Clegg – Ready, Set Code
Peter Watling – Introduction to iPhone development
Douglas Talbot – Introduction to Agile Programming
Nat Torkington – Somthing I wish people had told me…

Xlinks is a collection of interesting links as discovered by the ProjectX team.

Streetview arrives in NZ
Added on 12/02/2008 at 08:04AM
How Google’s ear hears
Added on 12/01/2008 at 07:04PM
Super happy dev house is on this week
Added on 12/01/2008 at 06:54PM
Life magzine photo archive on Google
Added on 12/01/2008 at 06:47PM
A more useful 404
Added on 12/01/2008 at 06:42PM
The size [...]

Here’s  five reasons on why Smaps rocked our world -

Smaps was designed to be simple and intuitive.
Smaps is blazzingly fast. We worked really really hard at making the predictive search fast and it paid off.
Smaps was built to scale. The site has been running off only a few servers and managed to handle [...]