Here's the inevitable comparison to the Diary of a Wimpy Kid books. Just by looking at the cover you can see there's no doubt that this book is basically "Diary of a Wimpy Kid For Girls." The book is cute and fun, but Jeff Kinney did it first and better and slightly more cleverly. Kinney's illustrations are more believably drawn by the Wimpy Kid, whereas the Dork obviously had a professional artist trying to simplify the drawings enough to look like an 8th-grader did them. (Not only that, but Kinney's illustrations are more consistent; the Dork's illustrations vary between stick figures and actual people-looking people.) And whereas Wimpy Kid can be enjoyed by girls just as much as boys, I'm afraid the Dork's hot pink cover and the number of times Nikki says "like" just scream "NO BOYS ALLOWED."
I thought this was a brand new book, but it was actually first published last June, and there is already another one out (something about a Party Girl . . . definitely will have to check that one out and make sure it's OK). I don't think there's any need for an adult to get excited about reading this, but I bet just about any young girl would love it.