...is easier said than done.
Yahoo! acquired Flickr in mid March.
Within 5 months, the usernames and passwords on both platforms have been merged. This is the way it is supposed to work, but rarely does with acquisitions. Congratulations! It may seem like a little thing, but it's actually hard to do and a testament to the fact that the Flickr and Yahoo! teams must be working closely together.
As of now, anyone can log in to Flickr using their Yahoo! ID. New users will have to use their Yahoo! ID (or create a new one if they don't have one); older users can continue to use their existing Flickr.com account details to log in, or choose to merge their Flickr.com accounts and Yahoo! IDs together*. One note: Existing users will be able to keep their existing screen names on Flickr whether they choose to merge accounts now or not - you don't have to change your name.
It would be great if Yahoo! Photos and Flickr also merged, so the Yahoo albums would be powered by Flickr from now on. The Yahoo! Photos interface, especially Yahoo! Japan Photos, is totally ugly.
I wish to merge flickr and yahoo
I don't know why I am not getting flickr photos after yahoo login. Please help me