Over on David Weinberger’s blog is a post about opening Yahoo. I have been using Yahoo for a long time and would love a complete Yahoo API. I have long wondered why Yahoo hasn’t integrated Calendar and contacts with a cell phone provider. I would love to have my contacts in my mobile category on Yahoo sync to my phone. I would also love to have the changes I make in my phone contacts to be synced with Yahoo contacts. Yahoo must know how powerful this integration is, so what’s taking so long. So I hope the Opening of Yahoo will make my dream of a single source for contact information come true.