Karelia Software today released Watson 1.6.1, an update to its popular Mac OS X application that provides an elegant front-end to several Web services. Version 1.6.1 a new tool that interfaces with PriceGrabber.com, the popular shopping comparison site. The release also offers minor enhancements and fixes a few bugs, including a problem that affected some users in connecting to certain Web sites. Watson sells for US$29.