Positive reactions are an important part of enabling social interactions on your web site. The star-family of tags enable liking/upvoting of any URL. This tag is the star button. Please note, this tag comes with a caveat; if there are multiple buttons on the same page, it won't update automatically with others, so try to use one button at a page for a flawless experience to your users. For more customizability, c/o star, and removeStar.