After using prefuse library and Processing for graph visualization a new project gave me the chance to try flare, the translation of prefuse to Actionscript.
My colleges from YProductions are investigating who are the principal persons, collectives and institutions in Alicante cultural live. The project is called redada and I made a social graph (lightweight version) of their results of investigation. First impressions: Good API design and quite stable for a alpha release.
There are still some improvements to be made in my application but if you want to make your own experiments you can start with this basic example, download Flex Project here.