Then perhaps this issue should be addressed, rather than sending the kindergartners to their separate corners?

If this is an issue now, it will continue to be an issue pretty much no matter how people, their posts, or their issues are grouped.

Learning to deal with various individuals with differing experiences and backgrounds is pretty essential for functioning in life.

If a twenty year old [to use your demographic examples] is looking to grow, learn, explore their options and get feedback on their thoughts, experiences and questions- homogeneous feedback would not be particularly beneficial.

Another thing to take into account is that if there have been some hurt feelings or miscommunications more than usual lately- in many countries it is getting to be "holiday season" and in some parts of the world that is combined with winter.

When these two factors are combined many people become more stressed and have greater difficulty with communication and interpersonal relations in general. It's actually a fairly common phenomenon.

But regarding possible "clique" issues- is it really a good idea to not address it head on or with the staff, or, even to simply address it everywhere BUT in the location it is occurring?