Product and shopping wikis range from wikis devoted to consumer reports to alert shoppers to potential problems with a product, to wikis focused on product reviews or comparisons, to wikis centering on a particular type of product like cars or motorcycles.
Cars Wikia
A wiki run by car fanatics about cars, car parts, where to find the best deals on cars and parts, and how to restore vintage cars.
Consumer Information
A wiki dedicated to information that people and small business shoppers need to spend their money wisely.
Motorcycle Wiki
A new wiki about everything to do with motorcycles from riders to manufacturers to racing.
ProductWiki
A resource of product reviews and informations written and maintained by the public.
ShopWiki
A comprehensive guide to over 200 million products with product comparisons and price comparisons.