I'd vote for all three, if I could. Seriously though, why deny ego gratification to those who like to answer boring questions? I suppose that all of the "triple to double" threads do tend to clutter up the place, but I have no trouble finding the "how do I set up a pedal operated shift lever?" type-questions, for reading when I'm bored.
Besides, when people ask boring questions, just refer them to park tool or SB. People lose interest, and the thread drops to the bottom.