Reading back this discussion we should realize that GENI is used by many different people with different objectives and different backgrounds. They also have different expectations and use of the system. It is of course not black and white, but we can consider the EXPLORER versus the RESEARCHER.
The EXPLORER is an amateur for who GENI is also a basic source of information. He (or she) is happy to accept the work of others and hopes to find many ancestors and relatives on the system. He is not really working with a plan, checking facts is not for him and he leaves the hard work to others. He is attracted by the ease and friendliness and without GENI he would not be into genealogy.
The RESEARCHER is more a professional for who GENI is just a tool that can help to show and share his work with others. He is critical and well documented and proud of his results. He will not easily accept a profile of someone else. He is happy with GENI, but without the system he would continue his genealogical work.
Probably the EXPLORERS form the majority of users and their numbers will keep growing, GENI would be wise to somehow accommodate both groups. It is always an illusion to expect all people to behave well in all circumstances. Better think ahead and prepare for trouble to come.