The 2 major grocery stores here never used plastic bags, they always had brown paper bags:
http://budgetlexicon.files.wordpress...rocery_bag.jpg
But earlier this year, due to increased environmental awareness, both grocery chains introduced green bags:
http://www.eves-best.com/greenbag-full.jpg
At first, at one store, they were free with every $50 spent. Now you can buy them for $0.99.
Some people forget to bring their green bags, though, so one store now uses plastic bags, while the other uses the brown bags - at no extra charge.
I think the green bags are a great idea to be used while grocery shopping, but some people took it too far and started using them as everyday totes! (They aren't cute! See
Style Bermuda)
So... I use the green bags @ the grocery store.
At other stores, I don't usually purchase much so I just put it right in my purse.