Conversion from xHTML to HTML5, actually can not be done. In this way, the web will get bloated with meaningless pieces of data when we have a way to sort.....
We can integrate Twitter Hashtag, @ and Inline Tweet in WordPress in several ways. It matters how you want to use the features in your blog.
We were invited by Pinterest for their Pinterest Promoted Pin product. We are disclosing our formula to get few thousands of repine and favs. First we should thank to Pinterest for their effort.