How do you usually judge a book?

I must confess I do judge books by the cover, if it somehow strikes me, I'll give it a chance. When I say cover I mean the title, or the colours of the cover, or...

The author. I usually give a second chance to someone who told me a beautiful story. (but no more than a second chance, when it disappointed me...).

Then I start to handle the book, and if it smells of love story, I'll give up. I read love stories, but not when that's the main point. Love ( and death and other few topics) occurs in everybody's lives, so you don't need to consider it the main point when you're telling a story. Have you ever read a story without finding love in it?!

So far the book is in my hands...I read something about the author (if I don't know him/her) and then I read the back, usually there is a summary of the story, or something like that (the italian "quarta di copertina"). And that's the final phase, the most critical, now there must be something that strikes me, that intrigues me...
And, of course there is a very final thing that I consider, but it is just a little thing: the price. Of course I don't give up because of money (sometimes I can look for another edition), but when I didn't work, and consequently I had no money of my own, I used to go to bookshop, decide what I wanted and then I went to the city library to take it. This system never failed, and if the book was good I used to buy it.

I've been disappointed very few times by this method that I could say it is almost scientific!
And you?! How do you usually judge a book?!


P.S.
The photo has very little to do with the post, but last time I went to London, instead of the city I visited Notting Hill and Portobello road... and of course I could not but snap a pic of the very famous travel book shop!!!