Hac φ, the annual Haskell Hackathon held in Philadelphia, PA, USA, will take place Fri-Sun, Oct. 17-19, 2014. Registration is free, and all levels of Haskellers are welcome. Come join us for a weekend of programming and camaraderie. Bring your own project to work on or organize on the wiki page to join another's project. All the info, including registration link, is here: http://www.haskell.org/haskellwiki/Hac_Phi Professional Haskellers: if you work for an organization that might want to help sponsor this event, please email me. Note: This event has previously taken place during summer, but will be in October this year. Hope to see you in Philly this fall! Richard