BoingBoing has its web stats available for public viewing. Some mildly interesting information, including the fact that Firefox readers account for over 50% of their readership (my blog, on the other hand, has about 35% of its readers using Firefox).
BoingBoing is a publication catering to a demographic that biases toward urban zeitgeist/web 2.0 technically literate, more liberal readers, so their stats are not representative of the broad population. However, the stat pages themselves are interesting to browse through as a picture of what a major site experiences.
You can see keyword stats here, other stats here.
Alex Eckelberry