Does Yahoo Widgets download no longer exist for U3 drives?
It would appear that it does not. From what I can gather, Yahoo! Widgets was not a true U3 application in that it left files on the host computer's drive. Once this was discovered, it was removed from the U3 depository. It remains to be seen whether a fixed version will ever be released, though being as the application has been unavailable for so long it looks less than promising.