As to notifiers and ringtones set,
I have my main e-mail account set to "Nymph," so I never hear that at night.
I have my yahoo account where that yahoo guy says "yahooo hooooo" set to low, so don't hear that at night.
My phone ring is set to high, but I want to hear that if an emergency call comes in.
There is this one girl I have been going out with and when we first started dating she used to call me when she left for work at the airlines, at 5:00 friggin A.M.
Rather than offend her, for a few months I put the phone on silent mode at bedtime.