This “Bing” article backs my way of thinking for the most part: http://www.bing.com/community/site_blogs/b/webmaster/archive/2012/03/07/building-websites-optimized-for-all-platforms-desktop-mobile-etc.aspx

How does your web site look on an iPhone or other mobile device? If your site requires Flash or isn’t usable on a mobile device, you need to do something about that. Mobile is too important, and its usage is only growing exponentially. Does your site look ok on mobile, but is really just a…

If you have any doubts about HTML5 and CSS3 because of the fear of things not working on all browsers… It’s time to lose them and get with the times. I can’t wait until all browsers support the latest standards and features. The good news is it is happening faster than previous standards adoptions. (Remember…