In San Francisco these days, you want to toss plastic bags in the trash, not in the recycling bin. This was news to me. I knew that plastic bags get tangled up in other things in the recycling bin, making it tougher for sorters to sort. I thought that meant I should bundle up the bags into a bag-of-bags and put that not-tangly bag into the recycling bin. But there aren't many uses for recycled bag-plastic. (Other kinds of plastic, yes; bags, no.) The San Francisco recycling sorters toss the bags out.