The site allows you to search the names of those who signed the petition to put a constitutional amendment banning gay marriage on the ballot. Those signatures, gathered by Florida4Marriage.org, are public record, so the Christ Church of Peace in Jacksonville decided to put them online.
A quick search for some of our more infamous anti-gay public figures was fruitful. Ronda Storms and Brian Blair both signed petitions, according to the site. So did failed St. Petersburg city council candidate Gershom Faulkner.