OK, so with all I've had to say on the subject of Ron Polarik, what do I think it all adds up to?
Simple: I don't believe he can be trusted. His willingness to outright lie is on full display in his accounting of the TechDude saga; in an attempt to redeem his own reliability after having defended TechDude, he fell back on the claim that he'd simply been lying to everyone for a month.
It's a similar problem with the name. It doesn't matter whether "Polarik" is a screen name or a real name. Lots of people post online under screen names, and I'm sure one of the explanations for is probably true. No, it's the fact that Polarik can't maintain a consistent story as to which it is. Here's a minor detail that really doesn't matter, but he's clearly giving different explanations at different times.
And what about the credentials? Over the last year, it's the credentials that have gotten the most attention. To be perfectly honest though, I don't think they're ALL bogus. In fact, I'd be willing to give him the benefit of the doubt when it comes to the credentials he gave in his anonymous, XXXXXXXXX declaration. Polarik's a liar, but I don't think he's dumb. And it would be very, very dumb to lie about your credentials in an expert legal filing, even anonymously. It's hard to plead mistake or ignorance on that, the way he could claim mistake with his work product.
Besides, if he's going to completely make up credentials to validate his "expert" opinion, he made up the wrong credentials. The claimed degrees aren't any more relevant to document analysis than my J.D., and the claimed experience is frankly rather generic. He's worked with computers, scanners, and printers. Well, so have I. Doesn't make me much of an expert in them though, any more than my frequent use of a microwave makes me an expert in radiology.
I can even conceive of a reason why he wouldn't have mentioned any legitimate credentials earlier. Legitimate credentials are real information, and Polarik has always been very, very careful not to give any personal information about himself. Enough personal information could allow someone to figure out who he really is. Although he's claimed a lot of degrees, he hasn't actually named them often. But I'm skeptical of there being two other Masters and another Doctorate, especially when they DON'T appear in the declaration, so I still find his overall resume untrustworthy.
Frankly, I don't think it costs much to concede he may actually have a single Ph.D., particularly when it's not in the field he's trying to claim expertise. After all, so does Alan Keyes. Orly Taitz has a J.D., and so does Phil Berg. Suffixes may be a sign of simple intelligence (except in Orly's case), but they're not a guarantee of credibility.
So we know that Polarik is willing to lie on a fairly wide range of matters, even on petty matters. We know that he doesn't actually claim any specific expert credentials with regard to digital imagery, image analysis, or forensic studies (even as he chides his critics for not having the technical expertise that he lacks himself). And we know he's adamant about not having his real identity discovered.
We know that he would appear to be partial to a wide array of conspiracy theories, particularly surrounding Obama. In a handful of FreeRepublic posts, he's expressed some anti-vaccine beliefs. He's even suggested that illegal immigrants carry bubonic plague and smallpox, despite the latter having been eradicated 30 years ago.
In the end, the question with Polarik's "evidence," as with any evidence, is whether the source is credible. And Polarik isn't.