With respect to Content you elect to post for inclusion in publicly accessible areas of Yahoo! Groups or that consists of photos or other graphics you elect to post to any other publicly accessible area of the Services, you grant Yahoo! a world-wide, royalty free and non-exclusive licence to reproduce, modify, adapt and publish such Content on the Services solely for the purpose of displaying, distributing and promoting the specific Yahoo! Group to which such Content was submitted, or, in the case of photos or graphics, solely for the purpose for which such photo or graphic was submitted to the Services. This licence exists only for as long as you elect to continue to include such Content on the Services and shall be terminated at the time you delete such Content from the Services.Yahoo's terms and conditions, relating to it's owned service Flickr
With respect to all other Content you elect to post to other publicly accessible areas of the Services, you grant Yahoo! the royalty-free, perpetual, irrevocable, non-exclusive and fully sub-licensable right and licence to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, perform and display such Content (in whole or part) worldwide and/or to incorporate it in other works in any form, media, or technology now known or later developed.
Looks like people jumping a ship on fire haven't checked for smoke on the new one.