I was under the impression that supermarkets had to pay to have their waste collected ... therefore any you left at the till did cost them money (not that I've done that). But I do go with my pannier and demand bag points at Tesco's ... not cos the penny is worth it but that I am making the point - sometimes they will give me upto 5 points for the pannier.
We are a family who would like to be green (very impressed with some of you), but we don't do enough. Bristol council has black box recycling for a lot of things... tins, glass, car batteries, clothes, shoes etc but not for plastic (we have to take that to the local sports centre), and a weekly collection of food waste (we compost the veggie stuff), and only bi-weekly for the main bin. However you have to pay to have green garden waste removed - we only have big branches to go out as the rest is shredded and composted, I would rather pay for the black bin which is going to the dump. We only have one car, and that doesn't get used daily as I always cycle to work, kids to school, and hubby tries to do a few days a week. Unfortunately his work keep sending abroad by plane, although its been commuting to London by train this week).
And we never put on our central heating before 1st Nov - it is a 1960's house with double glazing and cavity wall insulation and we don't like living in an oven, and wear a jumper when it gets cold - that really bugs me
when I see some of my friends who heat the house really high, and go round in a t-shirt and have the window open for some fresh air!!!.