I just want to say, there is a whole bunch of sections not exactly well covered here, esp. since they are some of the most frequent topics:
Induction Generators, including all kinds of mechanical over magnetical to elctrical energy devices, such as pulse motors, motor-generators, gaps, ssgs, window motors, ecklins, and so on.
Magnet motors, like Ramp motors, V gate etc. also hybrids like adams motor and such.
Well, the two could be one titled "Magnetism and induction stuff".
A general section for electromechanical issues like eg. switches, triggers.
For instance I got a question about a Reed switch, where would I ask?