Kula: 1001 1001 is a desktop client to be used in conjunction with Flickr, the online photo-sharing website. 1001 not only uploads photos to your Flickr account, it notifies you anytime new photos from either your contacts, everyone, or your favorite tags are uploaded. 1001 allows you to step into the stream of photos passing through Flickr and to quickly see what's new at the moment. Just run the app in the background and if triggered, 1001 pops up a small unobtrusive window to notify you of new photos. (Via Joi Ito's Web.)
This is pretty nice. Another interesting use of Flickr that demonstrates the hooks they have built into it for use by developers. I've got it running and it is kind of nice to see pictures pop up as they are posted to the Flickr site...