Instructables.com is a bona fide Internet sensation, a web-based community of motivated do-it-yourselfers who contribute invaluable how-to guides to the site on a wide range of topics, from gardening and home repair to recipes and gadgets that defy categorization. The site hosts more than 100,000 projects. More than 15 million people visit the site each month, leaving comments and suggestions on the ever-growing list of do-it-yourself projects.