Hacker News on 12 October 2010

• Brilliant design: RCA student radically improves the UK plug
• A great logo is recognizable in any form
• Super-Soaker inventor may have solar-powered fuel cell breakthrough
• Visualization: Guy-to-girl ratio of every bar and restaurant in SF/NYC
• OkTrends: Gay Sex vs. Straight Sex
• The Ruby on Rails 3 Tutorial screencasts are out
• Web Design is 95% Typography
• Java Trap, 2010 Edition
• The 'Irrational' Way Humans Interact With Dentists
• Tell HN: booking.com is looking for 40+ Perl programmers (in Amsterdam)