HTML5 and all its advanced features as long as they are aware of backward compatibility. In other words, if done properly users with modern browsers will have the benefit of the full HTML5 experience while users with older browsers will be none the wiser because everything will still work fine.
Rule over the Mobile Internet Browsing
Powerful Audio and Video Support
Develop Highly Interactive Websites
Highly Advanced and Improved Accessibility
Easier to build search front-ends, wikis, real-time discussion boards.
