Four short links: 29 May 2009

Freedom for OS X -- Mac app that disables networking for up to eight hours so you can get work done without Internet distractions. Technology workarounds for meatware bugs. (via Joshua-Michèle Ross). iPhone Casts a Giant Shadow on the Web -- 43% of mobile web traffic is from iPhone users, as measured by "the world's largest purveyor of ads... http://tinyurl.com/n8cssh