So buy it, but be prepared to learn a lot, and read a lot!
Her attempt to connect the two is nonsense though.
However, if you decide to read this book, then you are effectively sacrificing a lot of your free time. This is because afterwards you will feel obliged to read further material by Monbiot, Stigiltz, Callinicos and Klein herself. Oh, and of course the daddy of anti-capitalism, big Karl Marx.
Unless you've already made up your mind on the issue and are entirely closed to hearing anyone else's viewpoint, you should also read the counterarguments. One that's been recommended to me is Bhagwati's "In defense of globalisation".
I didn't really agree with what she said, but it is well worth a read.
For every piece of evidence used in No Logo, you could probable find a sources which put things in a different light. Please don't live in a vacuum, just because she uses the sources, it doesn't mean it's completely true.
Read some of The Economist's responses to Klein and you'll be less enthralled with her "facts".
Of course the book was written to prove a point. This means that she would have selected and omitted certain information and sources according to what she wanted. You would be very hard-pushed to find a journalist that doesnt as that is their job! However, I'm afraid all her facts were indeed true. If she simply made them up, then she would be up to her neck in libel, as would her publishers. Especially when you consider the people who she was criticising (Disney, McDonalds, Starbucks, Nike, etc). Can anyone say "McLibel Trial"?