Recently someone sent me an email asking about online family trees. She had found several for her ancestor but they didn't agree with each other. Some assigned him to a specific family but others declared that placement incorrect. Her bewilderment was obvious. She is new to online research and finding the going tough. What to believe?
Her cry for help got me thinking that it bears repeating that an online family tree is only as good as the person researching it and the sources used. We should never accept information without a source. My personal rule is to verify everything for myself.
If you do that you should be able to clear up confusion and not get into too much of a mess in your genealogy. Remember that genealogy without sources is nothing more than mythology