Yahoo Address Book API

[engine]

This new API provides access to one of the largest collections of address books on the Internet--the contact system behind Yahoo! Mail, Yahoo! Messenger, and Yahoo! Go. This means your applications already have a built-in audience. The Address Book API supports a wide range of third-party apps, such as sending invitations to seed social networks or social apps, looking up postal addresses for shipping services for online retail, and providing address "auto-complete" for messaging apps.

The API has extensive search capabilities. Once a user authorizes your application, you’ll be able to easily access that user’s address book and look for specific contacts. If you want to see which contacts are new, you can ask what’s changed since the last time you accessed the API.

Yahoo Address Book API [developer.yahoo.net]

[developer.yahoo.com...]
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[rogerd]

Seems like there could be some issues if oblivious users grant access to rogue apps. One hopes that the warnings will be plain enough even for the not-too-with-it user.

[Demaestro]

This is cool... at least it levels the playing field because many Y! partners have been taking advantage of this for some time.

rogerd that is true of any app.

[garrybetting]

This does look like it will be open to abuse by unscrupulous marketeers but I believe this can be limited if done correctly.