[bseo]

Why not offer both? Casual users might prefer to use the web app, advanced users can mine their own data. However, if I were to use a plugin to export my search data, I would expect it to be good at capturing/extracting search queries on a variety of websites and maybe have some additional features. Otherwise, I could just mine my Firefox history directly.

By the way, you could build a web app that runs on the desktop with Appcelarator's Titanium, or port the existing one to Titanium.

[riffer]

Yeah, that's the right answer. We just stepped out to grab lunch, were talking about your idea, and decided to basically build what you're suggesting here in this second message.

If you want us to let you know when we have something together (probably less than a week), my email is in my profile, shoot me a note, if you'd like.