Instructions: If the total number of points are greater than the dollar value of the book, it's worth buying.
Where did I hear about the book?
Independent friend recommendations: +3 each*
Acquaintance/third-party/some-guy-whose-comments-I-respect-on-that-one-blog recommendation: +1
Advertising or media coverage: +0.5
It's one of those books I'm supposed to have read but never got around to: +1
* If friend A and friend B both recommend a book, the recommendations are independent iff A and B came to hear about the book independently (i.e. not from each other). Such recommendations are cumulative.
Do I recognize the author?
Like the author: +3
Love the author: +5
Think I've maybe heard of the author: +1
I stopped reading another book of theirs partway through: -4
What genre is it?
(I know, I'm a jerk. Sorry.)
Cool picture: +1
Embarrassing to be seen with: -2
Intriguing plot: +1
Cool SF/F concepts: +1
Critic/author blurbs only: -0.5
Still not sure? Read the first paragraph.
Bookstore employee has to tell me the store is closing: +7
How about you? How do you decide which books to buy?