N.S.
I actually have never heard of the things you are talking about, but here's some things we do.
-I stay home full time and though we have two automobiles, one is an older gas guzzler. So most of the week, hubby drives the new car to work and we stay in-still get out to the park and walks, etc, but don't go out. I plan playdates and errands like shopping for certain days so we essentially only use one automobile and save on gas, maintenance, and the temptation to just go out and shop.
-Coupons, meal deals, stock the freezer, use leftovers, husband takes lunch at least 3 days a week, sometimes everyday.
-Keep lots of drinks at home in a second fridge, make coffee at home, keep lots of snack stuff in freezer for lazy nights and weekend game snacks. Keep eating out to date nights and the occasional pizza order in.
-For entertainment, use groupon, year memberships, military discount tickets, etc.
-Family babysits so we never have to pay a sitter
-Only clothing shop when we have coupons, major sales, or tax free weekends (something they do twice a year in Texas)
-Buy in bulk
I guess those are the main things we do...probably lots of others I don't even think about. Since we stopped eating out for lunch and dinners, we've saved probably $400 a month!