C. HOW DO I KNOW? Harris suggests that, when evaluating those four components, students examine the sites based on the following: Type -- determine whether the URL includes . gov (government), . edu or .ac (educational/academic), .com (commercial), .org (nonprofit organization), or. ~ (personal page). Publisher -- determine whether the organization, agency, school, business, or individual maintaining the site is likely to have a particular agenda or bias. Author -- determine the author's education, training, and background to find out whether he or she is a trained expert, an experienced enthusiast, or an uninformed observer. Structure -- determine whether the format is clear, logical, and easily navigable. Language -- determine whether the text contains emotional, inflammatory, profane, or confusing language. Count the number of spelling, grammatical, and typographical errors. Too many mistakes can indicate carelessness and suggest informational errors as well. Dates -- determine when the information was published and/or updated. If possible, check the publication dates of supporting data. Graphics -- determine whether images and animations take up a disproportionate amount of space in relation to their informational value. Decide whether the graphics convey information, add interest, provide interactivity, or simply distract. Links -- determine whether the site's bibliography and/or lins contain both supportive and contradictory information.