Free Genealogy Resource Challenge
Day 13: General Society of Mayflower Descendants
This group is dedicated to preserving the heritage of the pilgrims who were on the Mayflower. They have a membership process that includes fees and proof of lineage connecting to an original pilgrim to gain full access the information they have available but I have found many of the full members are knowledgeable and willing to help non-members locate information.
The site has a lot of general basic information on the pilgrims and many of their descendants available to the public.