| 1. | | The Art and Science of Seductive Interactions (slideshare.net) |
| 91 points by replicatorblog on April 19, 2009 | 13 comments |
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| 2. | | Round manhole covers, or if Feynman applied for a job at Microsoft (sellsbrothers.com) |
| 69 points by swombat on April 19, 2009 | 33 comments |
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| 3. | | Experimenting with the YouTube audio fingerprinting system (rit.edu) |
| 67 points by BioGeek on April 19, 2009 | 11 comments |
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| 4. | | First reprapped circuit (reprap.org) |
| 64 points by ph0rque on April 19, 2009 | 8 comments |
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| 5. | | "Nothing like this will be built again" - A Nuclear Reactor Tour (antipope.org) |
| 60 points by jseliger on April 19, 2009 | 20 comments |
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| 6. | | Hawala: transferring money without actually moving it (wikipedia.org) |
| 58 points by Rod on April 19, 2009 | 19 comments |
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| 7. | | ISPs refuse to shut down Pirate Bay (thelocal.se) |
| 53 points by vaksel on April 19, 2009 | 9 comments |
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| 8. | | The Real Pirate Bay (harvardbusiness.org) |
| 48 points by peter123 on April 19, 2009 | 43 comments |
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| 9. | | Thoughts on the Y Combinator interview process (arvindn.livejournal.com) |
| 43 points by randomwalker on April 19, 2009 | 8 comments |
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| 10. | | NYCSeed's summer program: $10k for 5% for 10 groups (nycseed.com) |
| 38 points by aditya on April 19, 2009 | 26 comments |
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| 11. | | The Long Road from XHTML to HTML (nimbupani.com) |
| 36 points by deepakjois on April 19, 2009 | 6 comments |
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| 12. | | The method still works (37signals.com) |
| 34 points by peter123 on April 19, 2009 | 3 comments |
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| 13. | | Erlang: Efficiency Guide (erlang.org) |
| 30 points by erlanger on April 19, 2009 | 7 comments |
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| 14. | | How do kids these days get started in programming? (ensode.net) |
| 27 points by vaksel on April 19, 2009 | 41 comments |
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| 15. | | Ask HN: cloud computing options? |
| 26 points by Tichy on April 19, 2009 | 27 comments |
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| 16. | | Awesome Procedural Terrain Generation (shamusyoung.com) |
| 25 points by buggy_code on April 19, 2009 | 10 comments |
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| 17. | | PyPy 1.1.0 beta released (morepypy.blogspot.com) |
| 25 points by ropiku on April 19, 2009 | 4 comments |
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| 18. | | Ask HN: Open-source project as startup? |
| 25 points by cool-RR on April 19, 2009 | 46 comments |
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| 19. | | Ask HN: Things They Don't Teach You In Computer Science |
| 25 points by wushupork on April 19, 2009 | 27 comments |
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| 20. | | The Lean Startup Presentation at Web 2.0 (with audio) (slideshare.net) |
| 24 points by wave on April 19, 2009 | 3 comments |
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| 21. | | Ask HN: Is there an archive, dataset or RSS feed of all HN posts? |
| 24 points by tm on April 19, 2009 | 4 comments |
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| 22. | | 13 iPhone Apps That Need to be Made -- Add Yours in HN Comments (ryanspoon.com) |
| 21 points by dell9000 on April 19, 2009 | 24 comments |
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| 23. | | Typeface Inspired by Comic Books Has Become a Font of Ill Will (wsj.com) |
| 20 points by nickb on April 19, 2009 | 4 comments |
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| 24. | | To help soldiers make sense of data, the US military now issues the iPod Touch. (newsweek.com) |
| 20 points by dannyr on April 19, 2009 | 6 comments |
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| 25. | | How to save Sun/Sparc/Solaris, and why (zdnet.com) |
| 20 points by ableal on April 19, 2009 | 28 comments |
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| 26. | | How long will it last? Graphic shows number of years left of various materials [pic] (newscientist.com) |
| 20 points by soundsop on April 19, 2009 | 12 comments |
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| 27. | | First Mac OS X botnet activated (macworld.co.uk) |
| 20 points by luckystrike on April 19, 2009 | 3 comments |
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| 28. | | UK startup icons launch fund to bridge Europe’s ‘Equity gap’ (techcrunch.com) |
| 20 points by pclark on April 19, 2009 | 1 comment |
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| 29. | | Microsoft trashes its brand — with Apple the big winner (bigtin.wordpress.com) |
| 20 points by zen53 on April 19, 2009 | 31 comments |
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| 30. | | Heaviside’s Operator Calculus (myreckonings.com) |
| 20 points by Rod on April 19, 2009 | 6 comments |
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| More |
![How long will it last? Graphic shows number of years left of various materials [pic]](http://www.newscientist.com/data/images/archive/2605/26051202.jpg){kind=link}