On My Opera, we started using the OEmbed specification a long time ago. The goal was to provide an easy way to get metadata information, for example from albums or pictures. Example: given a picture URL on My Opera:
http://my.opera.com/365/albums/showpic.dml?album=2721921&picture=42077711
we wanted to give our users a way to extract metadata information about that URL in an easy way. That's what OEmbed is about. So you have the following OEmbed API url:
http://api.my.opera.com/service/oembed?url=http%3A//my.opera.com/365/albums/showpic.dml%3Falbum%3D2721921%26picture%3D42077711
and the result of an HTTP GET to that URL is:
{ "width" : "3443", "author_name" : "giulia-maria", "author_url" : "http://my.opera.com/giulia-maria/", "provider_url" : "http://my.opera.com/", "version" : "1.0", "provider_name" : "My Opera Community", "height" : "2293", "url" : "http://files.myopera.com/giulia-maria/albums/2721921/DSC_5396.JPG", "title" : "April 27, 2010. Pink jasmine or pink lilac?", "type" : "photo" }
So that gives you some useful metadata if you need to embed the picture in a page of yours, or even within a widget. Various sites have been supporting OEmbed for many years now. You can see a brief list on oembed.com. However, now there's a new service called embed.ly that works as a oembed "hub", as it transparently supports URLs from many different websites.
And that includes My Opera too! Try it here:
or try it with your favourite site.