A 9.5 out of 10?

Amazon's search-portal startup, A9.com, has added something interesting. Now, you can supplement your search page with topic-specific buttons, which look and act like the ones that come with A9 by default.

Okay, that by itself is cool enough, but it turns out that third parties (that would be us) can create such buttons.

A9's defined a protocol, built on top of RSS to permit what they call Open Search. If you have a site that has search capability, by following their how-to, you can create a search button that searches your site, which any other A9 user can add to their A9 page.

Nice, eh?