Here’s an interesting little search sidebar that uses the Yahoo Web APIs. I found about it from this press release.

Search Panel, the popular browser companion which lets users search as they surf, now supports Yahoo! search. Thanks to Search Panel’s flexible architecture, the Yahoo! feed was fully integrated just one week after Yahoo! announced its API.

Here’s the search panel, which adds itself as a sidebar to IE:

http://www.naturallyopen.com/searchpanel.html