I have done extensive research and had spent literally almost 13 months correcting errors found in fairly well documented folks.
There was a particular family I had to correct three different times and eventually it just became ridiculous and an awful lot like chasing my tail.
I even offered a suggestion of locking those profiles for individuals who were well documented and from the colonial period, as those profiles would or should not need additions and/or corrections unless some very compelling evidence were to be brought forth. They responded that locking any profile would be against the very definition of what makes it a "wiki".
That was when I gave up.
I will check the site every so often, when looking for a particular individual and sometimes, though rarely, it has been helpful in furthering my research or at least offering clues to that end.
The best thing I could say about it is that there are a handful of really great and knowledgeable people who are active members, and then there's the project managers, like Jilliane Smith, who think they own your research, think their own your sources, and they think they own YOUR ancestors because they are using the sources from... (Read the full review)