Flickr adds Google accounts to sign-in options, plans better OpenID support
Up until now, Yahoo-owned Flickr required a Yahoo ID to use. As you can see in the screenshot to the right, this is now also possible using an existing Google account. For now, Google accounts are supported only for those who are new to Flickr. Existing users will also get some enhancements to the sign-in experience, starting with the ability to sign in from any page on Flickr.
For more information, check out the FAQs here.