The Paracast promises member privacy, so although I appreciate the underlying spirit of asking for credentials, and admire professionals who are willing to stand and be counted for their interest in the subject, I can also see why others would caution against it. Ultimately the decision is up to the member. Perhaps it might have been a better approach to try sending a private message and establishing a rapport first rather than just asking outright? Maybe it would even be a good idea to have a couple of people working behind the scenes to help people who claim to be professionals become acquainted with the field.
We ourselves know how off the rails these discussion forums can get. Anyway, I just posted information that might be helpful to anyone interested in the subject whether they're a psychologist or not. It's a good thread to do that on, so my suggestion would be to do our best to put some good info up here that might be useful, and let us be the ones to show that we're the ones deserving of trust first. That's not the same as an endorsement of anyone's credentials or intent. It just seems to be a more tactful way of handling the situation than spooking someone off who may very well be legit with a request for personal information.
Now if at some point down the road that information is turned into a lecture tour through ufo land under the banner of professional psychology, then that's a whole other story. I'd also want to see some credentials, and I imagine they'd be fairly easy to get. Plus if Mack could do it, so can anyone. Then again I suppose he had tenure. A person in private practise may be more vulnerable. Lastly I remember trying to make the point that anonymity doesn't guarantee credibility anyway because it can lead to mistaken identities and false assumptions that could conceivably damage a person's reputation anyway. I used Koi as a possible example and was attacked just for that. It's a touchy subject.