Linkbait: Tools and Freebies
Everyone loves a freebie. Offer free tools to your users and they'll reward you by referring their friends and readers.
Linkworthy freebies include cause-oriented items, such as reports, planners, checklists, calculators, games, calendars, and lesson plans. For example, the Union of Concerned Scientists (http://ucsusa.org) includes a webpage dedicated to global warming lesson plans for teachers. Educators can download detailed PDF lesson packets to use in their classrooms at no charge.

Another example is the Association of Reproductive Health Professionals (http://arhp.org), which offers an interactive online tool to help women choose the type of birth control that suits them best. End-users go through a series of questions about their values and lifestyle. The tool then suggests possible birth control options.
