The Full Faith and Credit clause has been specifically mentioned by advocates of same sex marriage as a way to insinuate such "marriages" throughout the country. The FF and C clause, in case you don't know about it, mandates that contracts such as marriage must be accepted by other states. So there would be (and probably has been already) lawsuits trying to force other states than MASS to recognize the same sex marriages performed elsewhere.
What is your personal viewpoint of same sex marriage? If you think it's good, or no big deal, then I can understand your comments.
Last time I knew, there were three already started.