Publish on your Own Site, Syndicate Elsewhere

POSSE is an abbreviation for Publish (on your) Own Site, Syndicate Elsewhere, a content publishing model that starts with posting content on your own domain first, then syndicating out copies to 3rd party services with permashortlinks back to the original on your site.
IndieWebCamp, POSSE

Gràce à Sacha Goerg je découvre un concept que je défendais déjà en partie, mais dont je n’avais pas imaginé les potentialités, et que je n’avais pas aussi bien formulé !

If you can start posting notes (tweets) to your own site and POSSEing to Twitter, instead of posting directly to Twitter, you have taken a big step towards owning your data.