I have been shying away from using Google contacts despite how nice it would be to have my contacts online. The main reason being that I didn’t want to maintain a contact list that wouldn’t sync with my phone, and I was scared of having all my information stuck in one proprietary system. Not anymore.

Im excited to see what applications will start using the API, specifically I am looking forward to a Apple Address Book sync so I can sync Gmail contacts with my iPhone. Another cool application would be one that allows syncing between corporate Google Apps accounts, that way two co-workers could share a common pool of contacts.

More info: http://googledataapis.blogspot.com/2008/03/3-2-1-contact-api-has-landed.html