I bought the thing because I like supporting the boys at
Penny Arcade, and they have a number of strips in it. A capsule review:
Pros:
Penny Arcade strips are funny.
The maps/quest info section is kind of handy, as far as knowing where to look for everyone.
It provides solid advice and a decent glossary of terms for those new to MMOGs.
The list of crafting recipes is decent.
Cons:
Kind of pricey for what you get.
Most every bit of info found within is more easily located at
Thottbot or other community sites.
A lot of the info contained within is out of date -- their paladin listing is especially screwy, with the skills being pre-revision, but the talents reflecting post-revision.
Editing mistakes abound, annoying the more cantankerously grammatical among us.
The introductory sections don't hold a lot of information that MMOG veterans would find of use, beyond stuff you could easily find in the manual.
Overall: a decent buy if you're a Penny Arcade fan, a newbie to MMOGs and have money to spare; otherwise, give it a miss.