Looks like he's gone at the moment. Anyone who makes claims like that should be prepared to present evidence to prove what he says is true. Titor-related imposters are rampant on the Internet. You can hide from a thief, but you can never hide from a liar.
I would truly be thrilled to meet someone who was really from John's Timeline, but alas...the imposters.
I can't agree with you on all of that seeing as John himself said how can you prove someone is a time traveler? While i don't think there's anything he can say to prove he is a time travels but, i do believe he should be able to speak to Pam with some type of proof or reveal continues amount of knowledge. John was believed because he talked for a long amount of time and, was continues with the information he revealed.