Productivity

EBay

eBay Inc. is an American Internet company that manages eBay.com, an online auction and shopping website in which people and businesses buy and sell a broad variety of goods and services worldwide. Users can sign up for an account, and then bid on items they wish to purchase, as well as set up auctions for items they wish to sell. A feedback system helps to identify sellers/buyers who are recommended/unrecommended to do business with.

US
www.ebay.com

Canada
www.ebay.ca

WebMD

WebMD is an online provider of health information services. The site has information regarding health and health care, including a symptom checklist, pharmacy information, "drugs information", blogs of physicians with specific topics and a place to store personal medical information. It is the leading health portal in the United States, it receives information from accredited individuals and it is reviewed by a medical review board consisting of four physicians to ensure accuracy.

www.webmd.com

AllRecipes

The key to this site, if you didn't gather it from the name, is recipes, of course. There are lots and lots of recipes for every kind of food under the sun, provided by cooks all over the planet.

www.allrecipes.com

Instructables

Instructables is a website specializing in user-created and uploaded do-it-yourself projects, which other users can comment on and rate for quality. It is dedicated to step-by-step collaboration among members to build a variety of projects. Users post instructions to their projects, usually accompanied by visual aids, and then interact through comment sections below each Instructable step as well in topic forums.

www.instructables.com