I love these. I have large notebooks with my recipes in them and can take them out of the notebook and if something spills on it just wipe it with a damp cloth. I can make a few copies of the recipes (the good ones) slide them in and hand them out when people ask for a copy!
I always buys the large pack of sheet protectors from Staples for recipes and quilt/craft projects. Friends also love it when you share a recipe in size 18 font already in a protected sheet.