Leah Culver of Pownce discusses the “oEmbed” standard that first allowed Pownce to put media content from a large number of sites into user’s Pownce pages, and now allows video and photosharing sites to give a standard embed code out to other sites, without the other sites having to change the way they work.
For the user, the result is that they copy a link and the content they want to share is easily embedded.

Link: sevenload.com