?

I want to know how google adsense decides how much to pay, and do they ban users if they log on two different username from computer?

 

1) it depends on how much the advertiseres bid
2) no they won't

 

Google takes a percentage of what the advertisers pay. If the top company bids $1 and the 2nd top company bids $.50 you get $.51 minus google's cut

 

1. Advertisers Bid for the ad positions and google takes a little fee when someone click on the ads of the advertiser.

2. Two different username from a same computer? Yes, that will flag the accounts as google may think that the accounts belongs to the same person.

 

advertiseres decides what to pay the ads.

and for your second question, it's big secret. nobody knows it