I love my iPhone, but...bah, no Jaiku! Building a Web 2.0 address book solves a huge business problem for the phone companies. Think about all the user-hostile things they do to keep people from switching. Long contracts, pernicious switching fees, etc. Meanwhile, all they would need to to to keep users committed would be to create user-facing services backed by their call history databases. in Public bookmarkswith appledatajaikunokiausabilityweb2.0