I think if you find someone on a dating or chat site who is too good to be true and wont give you a more candid picture or talk on phone, yea, thats fake.

However, a porn star on a porn website where everyone else regards her posts as being from her, (whereas most people believe Britni has a ghost writer) she doesn't want to meet or talk on the phone... why should she. Meet her at a public apperance if she makes one, she shouldn't have any need to call you just so you know its really her. Its not like you're having cybersex with her but an actuall intellectual debate.