You can click on the Google or Yahoo buttons to sign-in with these identity providers,
or you just type your identity uri and click on the little login button.
Here are a few pictures from the sprint we organized at Pycon-FR
We got a few people to install Google AppEngine and LAX on their machines, and explained the concepts at hand to a bunch of other people.
Update: LAX is now included in the CubicWeb semantic web framework.
Photo sous licence creative commons By-Nc-Nd par : yota