I've been working on a small Web Velocity application - both as a demo of what WV can do, and as a useful little application for finding podcast/Smalltalk Daily content from the website. I'm hoping to have a small bug fixed by the WV development team next build, so I can get it online. In the meantime, here's a screenshot:

You can search by tag or keyword, and filter by type (audio or video). It's ajax driven, so the queries update only the results field. It's small, but a nice, simple example.
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web velocity, seaside, glorp, ajax