Using R for Quant Development Data Mining Competitions
I was part of this. Prezi is cool but free for academics only. Boo.
http://www.compmath.com/blog/2011/11/gta-r-users-group-using-r-for-data-mining-competitions/
NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!