Widgetbox was a San Francisco, California based company that enabled businesses to create and deliver applications to their customers. Widgetbox formally discontinued their service on March 28, 2014.
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook