This is a very cool Flickr-based color wheel.
And in other flickr news, their new “cluster” technology for disambiguating tags is a really very interesting way of analyzing the data they have aggregated as tags.
They’ve also introduced interestingness, which does generate some very, well, intersting pictures, but since they (rightly) haven’t released exactly how interestingness is calculated, I find it more of a curio than anything else right now…