OK, here's a list of participating states:
Alabama, California, Delaware, Florida, Georgia, Idaho, Illinois, Iowa, Kansas, Louisiana, Maryland, Massachusetts, Mississippi, Missouri, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Utah, and Wisconsin.
I'll make a disclaimer and say that this list comes from a referral program 2 years ago so they may have added a couple since then. Anyone know of any changes? I noticed that it hadn't changed from the list that I had from 1997.
The biggest change I have seen in the program since 1997 is the dollar amount for second and third referrals. It used to double as it went up.