Before you see the 4 stars and discard my review as another naive "Go Girl!" piece, understand that (although I liked the book) I strongly disagree with the author's theories.
When I think of feminism (and I know many will disagree) I think of strong women fighting for equality. EQUALITY, as in equal rights and no better gender. Solanas called herself a "superfeminist" (and is hailed by many as some sort of heroine) but her sexist attitudes and intolerant nature make her an insult to the cause.
This book is witty, bitter and an enjoyable read, but I view it in the same way as I'd view a racist, homophobic or xenophobic text - I realise that it's the product of a disturbed mind. Her life of prostitution and being abused by men explains her bitterness towards them, but it's no excuse for her violent hatred towards the entire male gender. As many reviewers have pointed out, if the roles had been reversed (a man writing about killing all women) it would never have been published, and would be considered extremely sexist: why should it be any different for a female author?
For the said supporters who seem to understand nothing of her politics: Sure, it's full of good quotes to use when your boyfriend's being an [jerk], but you can't seriously support her idea of a perfect world (devoid of all men) Not only are her theories blatantly discriminative, violent, intolerant and (what I consider to be) antifeministic; he idea of a perfect world just isn't practical.