Technorati: Searching the World Live Web we got a taste of it already last Friday at the Future Salon (See the projections on the monitors). Now it's open for the public to enjoy too. Much nicer and cleaner interface. Take a look at the developer corner too.
Feels like it is faster as well, but that may be because it is early morning and I need to go to bed.
With that slick look Technorati will be a winner this week at the PC Forum.
Update: Here David lists the improvements details , and yes the performance is better.