Sphere: a useful new blog search engine. Seems to index things very fast. My posts from yesterday were already in there. It’s got a particularly nifty ‘custom date range’ function which shows time and volume of posts in a nice way.
Designed by Adaptive Path who’ve posted an account of how they arrived at the design they did.
Thanks to Leisa for the links, her appraisal of the design also makes for interesting reading.