Greetings, I am very pleased to officially announce HacPhi 2011, a Haskell hackathon/get-together to be held July 29-31 at the University of Pennsylvania in Philadelphia supported by contributions from Amgen, Jane Street, and Microsoft Research. The hackathon will officially kick off at 2:30 Friday afternoon, and go until 5pm on Sunday (with breaks for sleep, of course). Last year's HacPhi was a lot of fun, drawing an international crowd, and many people have already expressed interest in coming back this year. Come meet your Haskelly brothers-in-arms! I want to stress that everyone is welcome---you do not have to be a Haskell guru. Helping hack on someone else's project could be a great way to increase your Haskell-fu. If you plan on coming, please officially register [1]. Registration, travel, lodging and many other details can be found on the HacPhi wiki [2]. We're also looking for a few people interested in giving short (15-20 min.) talks, probably on Saturday afternoon. Anything of interest to the Haskell community is fair game---a project you've been working on, a paper, a quick tutorial. If you'd like to give a talk, add it on the wiki [3]. Hope to see you in Philadelphia! - The Hac ? team Brent Yorgey (byorgey) Daniel Wagner (dmwit) Chris Casinghino (ccasin) [1] http://haskell.org/haskellwiki/Hac_?/Register [2] http://haskell.org/haskellwiki/Hac_? [3] http://haskell.org/haskellwiki/Hac_?/Talks