I have entered lots of people. Probably a few hundred ancestors and their kin. I try very hard to get absolute proof of a relationship. If the proof is flimsy, then I say so in the notes. For example, an 8 great grandfather born in 1700 in Aublain, and a person with the same name gets married in 1727, There are no other candidate people with the same name born in the same town or towns nearby that could be the person getting married, so I take a calculated guess and make this the same person. It is far better if the marriage has the grooms parents names, than the proof is very good. The familyhistory tree allows all this stuff and I communicate with others who add to my tree, if I see some flaky connections. Or I will add a note that the connection could be flaky. So overall I am happy with this website and it is free.