According to NetApplications, iPhone browsing marketshare is on a strong upward trend since the release of iPhone 3G (no surprise there). What is interesting is the usage patterns by day. If our calculations are correct, iPhone usage on the weekends sees a 50-70% spike.
That means that iPhone users might be *gasp* using their iPhones for pleasure and not just work. We’d expect to see an opposite trend for corporate email-focused devices such as blackberries.