2013 8 http://www.youtube.com/oembed? url=http%3A//youtube.com/watch%3Fv3Dzwk1KvnZxGw& format=json& maxwidth=400&maxheight=200 • not RESTful • needs to know API endpoint • or use discovery – request original url – find oEmbed request in html header – follow up with oEmbed request