How do you know when something has attained 'tipping point' status and reached into the mainstream consciousness?
How about when a Saturday Night Live skit makes a semi-obscure reference to someone's personal cloud, as in the following (warning, this would probably be rated PG for some semi-mature content):
Although the skit references a certain company's personal cloud service (which shall go unnamed, although it is pretty obvious), we still like how it calls attention to another use for a personal cloud (even if it involves snooping on someone's personal life, and not by the NSA).