Tagging is fast becoming a useful navigation technique, and is key feature of sites like Del.icio.us, and Flickr. I have even implemented tags using Tagcloud, at the bottom of this blog.
Whilst they help in finding things by allocating meaningful category tags to items, it can be a lot of work to tag each and every image, song, or video with all the possible tags you may or may not use in retrieving them.
Riya has some very interesting technology that is due for beta in a few weeks time. The service can automatically learn to tag your photos, recognising people using face recognition technology, adding data about where the picture was taken, and even identifying the same person from behind by comparing dates of photos and what the person is wearing. To learn more visit http://www.riya.com/learnmore
Or you can listen to Richard Giles interview Tara Hunt from Riya, on the Gadget show.
