Web site evaluation

While filling out the evaluation form I discovered I liked the form from www.ncsu.edu/midlink/tutorial/WWW.eval. You were able to rank each question 1-4. With a yes and no question it doesn't give enough information about the entire website. The one thing I discovered is that not every web site puts the author on the site. It also made me notice all the ads on one of the sites I picked.
The value of using an evaluation is that it can point out advantages and disadvantages of the website. Knowing the disadvantages can help you to warn others about the disappointing parts of the site.
I don't think you have to use a formal evaluation on every site you look at. Sites that give you information it is probably wise to evaluate, but not one that is just for fun and games.