i doubt they would kick anyone out--the site would just close. sites like stackoverflow are possible because hosting costs are cheaper than advertising. even a

i doubt they would kick anyone out--the site would just close. sites like stackoverflow are possible because hosting costs are cheaper than advertising. even as ad profit per user decreases, hosting costs per user decrease as well. similarly, i wouldn't underestimate the value (to the advertisers) of impression advertising--the masses of people who watch TV and click facebook all day define pop culture by these impressions.