Is your site Mobile-friendy? Check it with Mobile Toolkit.
More exactly, Mobile Toolkit displays in a small pop-up, on the top right corner of your browser, valuable links to documentation and various checking tools.
The complete toolkit helps you validate the code of any page and to check it on several mobile emulators, not to mention that fact that it also helps you find good documentation for improving your mobile compatibility.
Mobile toolkit is everything you need to test and validate your standard mobile-friendly website.