Revenue v Profit?

I was bemused to note that on the economic stats page:

http://secondlife.com/whatis/economy_stats.php

the earnings of SL businesses are listed under "Monthly Profit".

Come on LL - you must know the difference between revenue and profit! Those aren't profits, profit is revenue minus expenses. What you are listing there is revenue.

I know there is a disclaimer at the bottom of the page but that's no reason to make such an obvious error.