And then there's this approach (from an email forwarded several times):

Attention Hotmail Users:

Due to a recent increase in the number of Hotmail users, we have found that our free web-based email service has become too popular for our resources. Because of this, we are going to begin charging a fee to the users who are not sufficiently taking advantage of the technology we are providing them. The users who receive this email and do not forward it to at least 15 people will be charged a fee of $25.00 per month. I have conferred with my associate S. Jobs, and we have agreed that this is an appropriate amount.

Sincerely, William Gates, CEO Microsoft Inc.

Makes sense to me! ;)