Yahoo! released version 2.5 of the Yahoo! User Interface (YUI) Library today. New components include a file uploader, image cropper, and profiler (as well as many others). You can read more information about the release on the YUI Developer blog and then download it from the YUI web page . It is also worth mentioning that the library now has over 270 examples available online to get you going with.

Jakob Nielsen has a top-ten list on his site regarding top application design mistakes. It’s a good list including things we’ve been hearing from usability experts for a long time now, such as Non-Standard GUI Controls, Inconsistency, and No Feedback. As a bonus design mistake, Nielsen aims at those reset buttons you see all the time on web forms.