"People sometimes act as though they are entitled to use Google's or Facebook's service as they see fit." Google and Facebook are going to have to be careful,

"People sometimes act as though they are entitled to use Google's or Facebook's service as they see fit." Google and Facebook are going to have to be careful, otherwise their sites and services are going to get really popular and they'll be treated as a public space, in the same way that malls are public spaces and have to allow free speech.