iOS: iPhone/iPad apps for coders and sys admins.
iPhone 4: A great rundown of 30+ unique cases/sleeves for the best smart phone on the market.
Ruby: Essential Ruby & Rails 3 reading.
Typography: 7 types of extra bold fonts.
*** Update: There will not be a "World In Links" post next week so check back the following week on 5/16 for the next update!