Froogle:
Developed by Google, Inc. One of the most promising price comparison sites to date.
BizRate:
One of the largest price search sites. Over 30 million products listed.
Shopping.com:
Child of Dealtime and Epinions, now merged to provide you with three shopping search engines that feature your products separately, yet the same.
Yahoo Shopping:
Complete Yahoo Shopping data feed creation and maintenance solutions.
MSN Shopping:
Complete MSN Shopping data feed creation and maintenance solutions.
NexTag Shopping:
Complete NexTag data feed creation and maintenance solutions.
PriceGrabber Shopping:
Complete PriceGrabber data feed creation and maintenance solutions.
Spring Air Products
Markets a on-furnace humidifier. Provides installation instructions as well as a FAQ page.
Tullula's Treasures
Sells ceramic radiator mounted humidifiers that are hand painted and some have decals. Offers a photograph gallery of products.
SureSource
Presents the Bemis product line, including accessories and parts.
Miller Electric
Produces a whole house furnace humidifier that attaches to a forced air heating system. Includes photos and installation instructions.