Instapundit has his doubts about the identify of Raed. His comments prompted me to echo him, though:
These are very interesting posts, but the question isn’t so much is Glenn real, or in Tennessee. It’s whether he’s really an ordinary American as he claims, or something else (conceivably, on either side). And that’s much harder to know. That’s the issue with intelligence — facts are easier to figure out than motivations, but motivations usually matter as much as discernable facts.
Glenn points to Jason Kottke’s discussion of Raed.