This is pretty big news, it seems to me, after all of the back-and-forth about data being trapped inside Facebook — the social-networking site has joined the Data Portability Group, along with Plaxo and Google, and will now be helping come up with a standard for moving personal data into and out of different networks. For all the brouhaha about Scoble and what an attention hog he is, there was an important point in all of that, which was laid out quite well earlier today in a thoughtful post at GigaOm by my friend Alec Saunders of Iotum. Let’s hope this effort makes it easier to own your own data, and move freely from place to place.