Yahoo Flickr API

Flickr is a photo-sharing community that enables users to upload, tag and comment on their photos and other users photos. The Flickr API provides the ability to view, manipulate, and search photo tags, display photos from a specific user or group, retrieve tags to construct URLs to particular photos or photo group. Flickr also provides an Authentication API for applications that need to perform restricted actions.
You can find more information about the Flickr developer community at code.flickr, including detailed API documentation.

Sample data through YQL

Yahoo Query Language

CHOOSE A TASK:

• Gets User info from user's Flickr ID
• Gets photos of a particular user
• Search for photos by location
• Get information about a photo
• Gets a list of most interesting photos

Show Data

Accessing the Data

Using the data in your application

In order to access Flickr data in your application, you’ll need to get a Flickr API key. You can do this by creating an app here
Create an App

Rate Limits

Use of the Flickr developer service should not exceed reasonable request volume. Access through YQL is limited to 20,000 signed calls per hour and 2,000 unsigned calls per hour, as defined in the YQL Terms of Use. If you believe your application will exceed such volume, please contact us.

TERMS OF USE

By using the Flickr developer service, you agree to the Terms of Use.

Documentation

Learn how to use the Flickr API through descriptions of its queries and parameters. In addition, the documentation also inculdes sample code to help get you started.

Source : http://developer.yahoo.com/flickr/