Here is a weekly list of applications that use web clipping:
http://www.palm.net/apps/users/main/1,1019,,00.html

Here is a definition of web clipping from Palm:

"The web clipping architecture includes client-side applications that run on a Palm OS® device, proxy servers for handling translation between the web clipping application format and HTML, and content servers. The client-side application is called a web clipping application. It is constructed in HTML and translated into the web clipping application format. Once this applcation is installed on a Palm OS device, content is delivered from the content provider's own web site as a subset of the HTML 3.2 standard."