[mongrel]

There is other research that defines four types of relationships and the max number our brain can handle in each sphere.

1-3 intimate
12-15 personal
120-150 social
150 and up public

All spheres are important for health, and being out of balance in one will greatly affect our well-being.

[One_Upmanship]

Which explains, when FreeRepublic is down, some regular posters go nuts.