How many of you are making the transition to HTML 5? Browsers are supporting more and more features of HTML 5 as time passes. Quite frankly, I am eager for HTML 5 to become mainstream in terms of development and support as there are many features that can be highly beneficial. The only problem I see is that Internet Explorer (even the newer versions) don't support a lot of HTML 5 features... then again, I say that as if I should expect anything different.
Are you using HTML 5 now? If not, do you plan to begin using it and what are your favorite features? My favorite features are probably the form attributes such as "placeholder" or "email" as they can save a lot of time and effort.