The new download location for Konfabulator (now called Yahoo! Widgets?) is at: http://widgets.yahoo.com/
I tried out Konfabulator and some of the widgets do look nice. Their level of usefulness is still questionable at this point (a lot of simple clocks, etc) but I can see some interesting things that can be done when integrated with the Yahoo APIs. This does move away from dependency on the browser which isn't necessarily a bad thing. The one thing I don't like as much about these type of things is the memory usage. Each widget seems to take up as much as the next and as much as the main Konfabulator process.