I've never been in a book club before. How's this work?

Are we supposed to have finished the book before September 1st or read it over the month? I foresee a spoiler problem.

This may get covered, but what is typical etiquette for posting and commenting?

Maybe this will all get explained in the ground rules post, but just throwing out a couple of things to cover for us first timers.

I'm really excited about this, btw. Another huge win for the Verge. Sometimes I think you guys were really holding out on the great ideas while at Engadget....