Just a short post to note that OneStat has released figures about worldwide and country specific screen resolutions of Internet users. Here's the global averages:

1. 1024 x 768 56.15%
2. 1280 x 1024 15.79%
3. 800 x 600 12.04%
4. 1280 x 800 4.09%
5. 1152 x 864 3.90%

And data for just the US:

1. 1024 x 768 52.22%
2. 800 x 600 13.81%
3. 1280 x 1024 16.91%
4. 1280 x 800 5.05%
5. 1152 x 864 3.63%

In my opinion, it's still advisable to design to 760pixels wide (for fixed width layouts), as 12% of the world and 14% of the US are on these resolutions. Once those numbers drop below 5%, it will be more practical for websites to feature fixed layouts tailored to 1024 pixels.