After the book's release, no.

But anyone who gets an unreleased book/movie he's not supposed to have or got it legally but isn't allowed to publish an advanced review by the publisher yet posts publicly about the book's content in any way can be causing prejudice to the copyright's owner, its marketing campaign etc. Publishing bogus reviews is also causing prejudice. The publisher would be in its right to send C & D and worst - either you got the book illegally, break an agreement not to reveal something about it, or you invent things about the book and spread them among Tor's customers.

It would be different if Tor had printed ARCs or sent copies for review, but they have not, meaning what's around are illegal copies or - far more likely - invented ones. They used to send ARCs for previous WOT books - they used a more classic marketing strategy then, but for TGS they have not. They/Harriet don't want advanced reviews other than the ones they authorize down the line.

Legalities aside, it's extremely disrespectful to Harriet and Brandon and all people involved with the book to go against their expressed wishes. It's their book, their choices - to a fan it shouldn't even matter that this is illegal, that it's against the wishes of the creators and their publisher should be more than enough not to touch that.

Crafting faked reviews is worse in a way (and there's been several at Wotmania in the wake of Jason's real and by then only authorized review - from well-known posters of many years here who should know better - and that have been deleted by the admins. If it were my site, those idiots would have been banned). With those you create false expectations that could ruin the experience of fellow fans naive enough to trust you. A WOT fan should be ashamed to do this to other fans who've waited for 5 years for this book - people are all extremely eager for info about the new book and it exploits their weakness. And be sure details, even so called 'non spoilers' (faked or not) are gonna spread from here to other WOT sites not allowing reviews - giving a very bad name to RAFO in the WOT community.

Fan sites have been blacklisted by movie companies/book publishers for doing stuff like this (it's happened to several SW sites in the days). They can even be sued and closed down.