The ones about how much each answer pays and the minimum threshold, the answers essentially say "you get paid an amount per answer" and "you can pay out above a threshold" without actually saying what the numbers are. It's a little recursive :P
I guess my main question is: Ballpark figures of course, not holding you to a quote, how much per answer? We talking pennies or dollars?
Threshold then comes in to play as (for example) if it's pennies per answer and the payout threshold is $100 it will probably not pay out for anyone but those that figure out how to game the system or get reeeally involved and treat it as a job ala Mechanical Turk
I'm also getting a vague reminder of Aardvark[1] (RIP, cheers Google) if it'd help to see how something similar worked :)