Epinions: Cycling Products 
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/otdr-CyclingBest Bike Buys
Compare prices and selection on bicycle parts, clothing and accessories.
http://www.bestbikebuys.com/
eBuying Guides: Where to Buy Road Bikes
Concentrates on where to buy and shop for products, but also has staff-produced buying guides for over 200 products. Some of the guides are links to other buying guide sites. Accepts no payments for listings.
http://www.ebuyingguides.com/where/rbike_w.htm
Xoomgear
Offers consumer reviews and product comparison of mountain and road bikes by features and price.
http://xoomgear.com
BikeTech Review
Offering unbiased, laboratory-based evaluations of cycling products. Price, performance, and durability are used as the principle evaluation criteria.
http://www.biketechreview.com
eHow to Buy a Used Bike
How-to centers that give consumer information, shopping advice, as well as how to do things such as projects.
http://www.ehow.com/ehow/ehow.jsp?id=14157
How to Buy a Bike
Tips and advice on buying bikes from the National Bicycle Dealers Association.
http://nbda.com/site/page.cfm?PageID=63
Consumersearch.com: Mountain Bikes
Identifies which products reviewers like and dislike, where they agree or disagree, and why.
http://www.consumersearch.com/www/sports_and_leisure/mountain-bikes/
