that will always be the case in a system like this. one could argue that musing.io is such a group. we are human after all. its natural that we band together in groups with others we feel comfortable around. the whole safety in numbers herd mentality. in such groups there will be voting on other members post. in fact there should be more votes given by those within the group to other members that votes from those that are outside of the group. this would be due to the fact that those within the group are more attentive to each other than to those who are outsiders. its like a group/troop of monkeys sharing fruit and picking the lice off each other.
shit i hope you understand what i'm trying to say. i have a bad habit of getting long winded and rambling on and on...