In reply to JOH.

Good question, and (chicken) Brian asked that as well. This size is standard in Central America, and can support a family of 4 to 8 people, depending on a few variables, such as how many are adults and how well fed the family is. Another big issue is the local climate. It can support less people in cold regions, because the composing side can take 50% longer to biodegrade. This means that a new, empty box is available less often, so it will accommodate fewer people than it would in warmer climates, all else being equal. Therefore, I am hesitant to specify an exact person capacity. I am going to take whatever comments appear here, as well as a bunch Brian sent, and work them into v2.0.