The workshop was animated by Geoffrey DORNE and Florent DELOISON . Geoffrey has a really great website (in French) about graphic design and Florent a blog about all the cool stuff he is making (in both French and English).
I mostly worked with the Twiiter API. My project was an application allowing you to locate the closest tweet with a user-choosed hashtag, locate it and then help the user find it by displaying a compass. I thought this could be fun to use in marketing, something like "First one there get free food " or to meet people in your city: "If you find me, I pay you a drink".
Anyway, here are the best piece of code on the subject:
First to implement the compass heading, you can access your Ipad and Iphone compass through this piece of code (sorry android users). It's a real compass heading north, not just gyroscope which is pretty great.
To get geolocated tweet here is a cool Github repository. It displays tweets around you using your device geolocation.
To search through Hashtags, here is another Github repository.
Finally a nice piece of code for Processing that I found, witch allows you to simply use Twitter4J to post message. You got to be registered as developer on Twitter website (make sure you register you application as Read and Write to post).
Well this is it, I hope to make another post soon to talk about my fully finished and multibrowser-compliant webapp!