This site uses the viewport meta tag which means the content may be optimized for mobile content.
This page contains a meta robots tag which tells search engines and robots to index or not index the page.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".
Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook