Hacker News on 30 July 2010

• Back Office Exposed: Bingo Card Creator
• You should blog even if you have no readers
• Three years ago, I sold my startup because I was an idiot
• High-Frequency Programmers Revolt Over Pay
• Ask HN: Does anyone still use IRC?
• Rooms irc app removed after 4 minutes in app store
• Rise of the telepresence robots
• Apple starts patenting mobile app ideas
• Tribalism is the enemy within
• How Y Combinator Is Remaking Silicon Valley in Its Image