Download manager, e-mail client, IRC, online bookmarks, speed dial, mouse gestures... everything is ere, ready to be used on any computer. All you have to do is to copy the folder in your USB and plug in your pendrive to any computer.
Surf the web using your own settings from any computer. That's good. Don't worry about changing parameters on your friend's computer, don't be fixed to the Internet Explorer of all those Internet Cafes and libraries. Use Opera 11 on the go.
With Opera USB you'll enjoy privacy and compatibility at the same time. You won't install anything and you0ll leave no traces of your surfing activity. Use tabbed browsing, use your plugins, access your Opera ID...
Finally, it's totally free. Experience the latest web browser with no restrictions. If you like Opera, Opera USB is a must have in your USB drive.