HowStuffWorks: How Vacuum Cleaners Work
Graphic tutorial looks inside a vacuum cleaner and shows how it works.
http://www.howstuffworks.com/vacuum-cleaner.htm

Epinions: Vacuum Cleaners
Consumer-generated reviews, buying tips and advice, ratings, price information, and searchable in a variety of ways from price to product type.
http://www.epinions.com/hmgd-Large_Appliances-All-Vacuum_Cleaners

GoodHousekeeping Institute: Vacuum Cleaners
Ratings for budget and deluxe upright models.
http://magazines.ivillage.com/goodhousekeeping/consumer/appliances/articles/0,12873,284519_290094,00.html

Hoover Assistance
Provides customer information and owner manuals for European and US models of the company's vacuum cleaners.
http://assist.hoover.com/

Vacuum School
Features vacuum cleaner ratings, reviews, and information.
http://members.tripod.com/~vacschool/index.html

How To Choose A Vacuum Cleaner
Includes selection tips and recommended brands.
http://www.knowledgehound.com/khhow2s/choose_vacuum.htm

Kirby Owners Club
Kirby vacuum cleaner information including contact address and free-phone bags and supplies.
http://www.kirbyownersclub.com/

Appliance.com: Vacuums and Cleaners
Lists brands, features, describes new products, prices, specifications, and links to shopping sources.
http://www.appliance.com/floor/

ConsumerSearch.com: Canister Vacuums
Identifies which products reviewers like and dislike, where they agree or disagree, and why.
http://www.consumersearch.com/www/house_and_home/canister-vacuums/

ConsumerSearch.com: Upright Vacuums
Identifies which products reviewers like and dislike, where they agree or disagree, and why.
http://www.consumersearch.com/www/house_and_home/vacuum-cleaners/

ConsumerSearch.com: WetDry Vacuums
Identifies which products reviewers like and dislike, where they agree or disagree, and why.
http://www.consumersearch.com/www/house_and_home/shop-vac-reviews/