When a dialogue box appears offering you a big score if you launder the money, you have the choice of taking a small amount now or passing it on and getting a big cut later (usually within 24 hours).
If you select the second choice, ask friends to help, the number of helpers raises the amount all receive. You may want to write a comment just before posting the announcement urging others to join in.
Recently, the money laundering option appears to allow more than one use per day (circa Jan. 1, 2010). The amount of money received seems to vary more widely as well, from $50 to $70 million, and maybe more.