States: New Hampshire: Rockingham
As for what Genealogy.com uses, if anything, that is posted by way of public response found on a GenForum message board. Mr Bridgefield, their tech person, assures me that they use nothing posted there. While I have no reason to doubt him, at the same time, as I said to him, I would be MUCH more comfortable with that if Genealogy.com made that a written guarantee as part of the Agreement of Use.
As for what Genealogy.com uses that it obtains in the form of GEDCOM, however, contributed by subscribers, that is a whole different matter. I have been in touch with a distant cousin who contributed a GEDCOM to FTM that included his relationship to me. While I have no objection to his use of that data for his personal use, I did not and would not consent to his contributing this data to a company that sells the information to others. I have not been able to see for myself what he contributed because to do so would require me first to pay for a subscription. THAT I steadfastly refuse to do!
Of course, I am not passing judgment on Genealogy.com. To the extent, for instance, that they sell information compiled directly by them from public records, WONDERFUL! However, when they provide the opportunity for others to contribute data which the contributors have no right to give, it does not please me that they shift the blame to the contributor for the wrong. Further, to the extent that they disclaim the accuracy or authenticity of the data contained on their family genealogy CDs, it does not warm my heart that they leave it to the buyer to choose the good information sold from the bad.