More cool Web 2.0

I love Flickr, it's a great site for storing all of my photos and I love the ability to have them all online at full resolution, sharing the ones I want to share and so on. Brilliant. However, today I noticed Riya, which looks very interesting too. It holds your photos (although at 800x600), but the idea isn't really to store them on the site, rather to index them. The best feature is the face recognition that is built in. Riya will check photos you upload for faces it recognises and tag the photo automatically. How cool is that!? And slightly scary of course. Great stuff.