ZDNet:

• The iPad accounts for a whopping 97.2% of tablet traffic in the US and 46.8% of all mobile web traffic.
• iPhone accounts for 42.6% of mobile web traffic.

Overall, though, mobile devices still account for less than 7 percent of US Web traffic. So don’t act too surprised when your favorite restaurant deploys a new site chock full of Flash. Mobile browsers, whatever the stripe, are still a minority.