"Easy to use" was one of the traits Jack Shafer found distinctive to the few Web sites he could cite as having found success with the fee-for-access model. Writing for Slate this week, Shafer said all share at least one of the following: "1) They are so amazing as to be irreplaceable. 2) They are beautifully designed and executed and extremely easy to use. 3) They are stupendously authoritative." Media Management Center researchers have heard the "easy to use" phrase for years. MMC associate Stacy Lynch offers some help on deciphering what that means in a blog post and her recent Web Favorite and Easy to Use studies for the Center.