Tag Galaxy is pretty cool. [Flickr, tags, photos, fun for all]
Flickr Memry blends the classic memory game with Flickr images. Enter a subject tag, play memory (4x4 or 6x6), and then view or mail the originals if you like. (flash)
Shutterbook - "drag and drop photo sharing." A flash-based Flickr-esque photo community..."The service is similar to Flickr before Yahoo and while it is in an open beta at the moment, there will be a cost for the premium version..."
Flickr's been around as a photo posting/gallery/sharing kind of place for almost a year now, but today they launched something pretty impressive (ignore the dumb name): Organizr. Check out the demo movies or try it out yourself if you already have photos there. This is the first time I've used a web application that rivaled my desktop application of choice (iPhoto, for photos). Pretty impressive what you can do in Flash these days, besides singing kittens and work-dodging games.
Flickr! First launched during the week of no-metafilter, Flickr is a new kind of social software application (in the tradition of Friendster or Orkut) - but, after making friends and forming groups, it actually gives you something to do! Created by a team led by Mefi's own sylloge, Flickr is also a collaboration focused Flash-based application that allows you to share picture files with friends, comment on them and post them directly to your weblog. An exposed set of services is also leading to a host of interesting ideas.