Mozilla Labs just released a bunch of anonymized browsing data for their open data visualization competition:
This competition is based on Mozilla's own open data program, Test Pilot. Test Pilot is a user research platform that collects structured user data through Firefox. All data is gathered through pre-defined Test Pilot studies, which aim to explore how people use their web browser and the Internet.
There are two datasets in various formats. The first is browsing behavior from 27,000 users, including on/off private browsing that we saw a few months ago. The second dataset is from 160,000 users and is on how they actually use the Firefox interface.
Additionally, both sets have survey answers to questions like "How long have you used Firefox?" which could make for some fun and interesting breakdowns.
The deadline is December 17.