In case you haven't logged into your account recently, I just wanted to let you know that it's official: Yahoo Photos will begin closing later this summer and will completely close this fall. After it closes, Yahoo will delete all photos that you haven't moved somewhere else, so I highly suggest moving your albums and archives to another service, downloading your photos, or buying an archive CD (the last option is apparently only available to users of the New Yahoo Photos service).
Yahoo has been managing both Yahoo Photos and Flickr for some time now, but they have apparently decided to focus all their efforts on Flickr. For tips on dealing with this, read more
The easiest options are moving your photos to Flickr or Photobucket. For more help and your options for archiving your photos so they are not lost, check out Yahoo's guide.