The event was covered here http://blog.kairossociety.org/kairos-hacks-kicks-off-in-barc... here http://blog.kairossociety.org/kairos-hacks-barcelona-and-the...
I ended up writing a tool that extracts meaningful information from the Spanish elections : https://github.com/shadeslayer/dataminer , which can be further visualized on a website. Its not the most proficient code ever, but it's a start :)
Have you got plans to go to more hackathons? Might see you at the next one! :)
I think a big part of that is thanks to students like those behind HackLondon and similar events who work tirelessly (and sleepless-ly) to get people excited and sharing their work.
It's a good time to be a student in tech!