I meant (2) - I don't know whether there are flaws, and want to find out; and more generally, I want to know whether the book is rehashing old ideas, or taking sides in an existing controversy, or presenting brand new ideas, or is considered as ramblings of a cranky outsider not worthy of attention, etc.
When I read a book with new and interesting ideas, I usually want to know if there are major flaws that any knowledgeable scholar in the field would point out immediately (Two recent examples are Pinker's "The Better Angels of our Nature", and Harriss's "The Nurture Assumption")
I usually:
One problem is that I end up spending a lot of time reading stuff of no interest - either reviewers explaining the book to people who haven't read it (and sometimes even misrepresenting it's arguments, or framing them in terms of their pet controversy), or bloggers/posters who haven't read the book so go off a summary and come up with arguments that are already well-addressed in it.
So, what tips and strategies do you have for finding solid scholarly criticism ?