I first thought that one of my three-way switches was toasted, leaking electricity as I was measuring 120V and 25V instead of 0V in some combinations, but I replaced each in the pair with newer ones and used ones that I had replaced with rocker-panel threeways in other spots in the house earlier. The switches aren't the problem. I seem to be recording 20-28V at the common terminal on the "outgoing power" going TO the light bulb, as well as on the travellers in some combinations. I have even disconnected the live power to the common terminal powering the light switches, and still am recording a 25V average at the terminals. Then, I noticed if I disconnected the "to light" wire from the common terminal, the wire itself was only 1.5-2.0V, but if I push it with the common terminal, it jumps to 25V.
After looking for other crossed wires and similar effects "downstream" of the switch / light here, then I did the same tests with no bulb and an incandescent bulb and it looks normal (0.0-0.2V on my multimeter, free or attached to common terminal) which is exactly what I would expect to see in my circuit!! I can almost plan on putting everyting back in the wall, scrwing the plates back in, and saying "all is okay" and pretending nothing happened, but I really want to know why a compact fluorescent bulb first of all does something different with this circuit from what is expected, and second, assuming I bought a special bulb that is really a generator generating 1.5V on my wire, why are my simple 3 way switches acting like transformers and turning it into 25V.
In theory, if I hook enough of these bulbs and switches together correctly, I can probably power another bulb! I seriously doubt I have stumbled upon Free Energy, so an answer would make me sleep a lot better.
You can see a schematic of my circuit:

and a sketch I drew up mapping voltage measurements with the different three-way combinations for the light switch, but this was before I realize the difference between voltages when the 'out' wire was attached to the common terminal or not.
