This one came in the mail just this weekend (7/10/04).
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Ancestry.com is the first site I found. Someone did a lot of work to explain just what's behind that ad shown above. Here's another one at geocities.com. This one, from whitmania.com lists several different outfits and their "products". Finally, some of these outfits have found themseves in court. For example this one at usps.com/judicial.
There are lots of other sites. Just go to Google and try some related phrases. Enclose them in quotes, like this: "Family Yearbook", or "genealogy scams", or "American Genealogies Inc."