I bought this book for the howaboutwe membership.
All things considered, I'd say that at age 26, this book doesn't have a lot of new stuff to tell me regarding all things vanilla and mainstream in the dating world. It's full of advice that's going to seem obvious to anyone who's been dating and sexing for a while. It's got Captain Obvious advice ("be direct! Say you want to have sex!"), a frankly bizarre "judging men by their books" section (loving Joyce Carol Oates is a sign that a guy is delicate?!), an out-of-touch throwaway section about "how to know if a girl is into other girls" ("how does she feel about Shane in the L word?"), lots of casually sex-negative language ("walk of shame"), and tons of hammering it home that sleeping around is temporary and monogamy is the goal (despite some statistics at the beginning that speak to other kinds of lives)…
It's also peppered with alienating, sexist little jokes. Like how you totally need your male friends cuz they'll always be trying to get you to see the genius of Blade Runner. Because, y'know, guys are the ones who like science fiction or geeking out about movies! So funny!
There's a total absence of advice about balancing your kinks with your other dating priorities—something that my girlfriends and I talk about often!
Some of the technology stuff is good and on-point (don't stalk their facebook page on an iphone cuz you'll accidentally like something.)