Oubliette, I agree, they do infuse a religious influence on the show, more so than TAPS. Any scientific pretense is missing from PS. But I believe TAPS does pretty similar things, just with more bombastic language.
Let's look at some of the infamous theories TAPS operates with, ostensibly held as scientific fact; I mean they'll SAY its a theory, but treat it as factual evidence:
1. There's a theory Limestone helps focus spiritual energy
2. There's a theory granite helps focus spiritual energy
3. There's a theory quartz helps focus spiritual energy
4. There's a theory that ghosts manifest as cold spots as they draw the energy out of the air
5. There's a theory that ghosts manifest as hot spots filled with energy
6. There's a theory that ghosts operate as a residual haunting
7. There's a theory that ghosts operate in intelligent hauntings as well
8. There's a theory you shouldn't play with Ouiji boards as they open a pathway for greater evil things (manson episode….ugh.).
9. There's a theory that the barometric temp will drop just before a ghost attacks (thanks Barry…).
And all of this can conveniently be caught on equipment you and I can buy from circut city, office depot, or any hardware store; although clearly the guys at Samsung, Sanyo, and other companies are geniuses for having devised such devices with multiple purposes!
This is not to say those theories are incorrect. It's just that in no way are these theories truly scientifically verifiable at this time.
Looking back on what I wrote, this comes off a LOT more cynical than I intended. As I've discussed in another post, I actually strongly believe in supernatural entities. Whether I believe all the above theories and "ghost decting" methods used…that's another story. As far as PS is concerned, they're just more overt about their religious motives.