I guess I'm just used to it. I get questions all the time (several a week at least) by email from people who aren't even ON the forums. Usually from seeing my CarDomain site. Another fellow from Club Ranger 4x4 in Argentina just emailed me recently with questions about the overhead console. One of the guys down there bought one of my keypad entry systems a year or so ago and has literally the only one in Argentina -- they don't even have Explorer systems like that down there.
Usually, if someone asks me a question of general interest, I suggest they post it even if I answer it by PM, then I post my answer.