For B3:
http://www.buzzerbeater.com/community/rules.aspx?nav=B3
Doesn't affect players minutes for the week
As for the first question, would depend on what your salaries are, but 6th spot gets at least 2 games, one home one away, so 1 game of income, versus a week without salaries, you'd say roughly 200-300K better off being in 5th as opposed to 6th?
For the guy in 4th, in liklihood they only get one away game, unless they can defeat the #1 team away, so 1/3 of a game of income versus a week without salaries, probably roughly 600K better off being in 5th rather than 4th (basically, the person in 4th place gets screwed over under this system
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)