I use them for college work or any kind of books. I can tag my page and come back to in and it doesn't tear up the page and are just plain awesome! If I have to read 3 different chapters in my psychology book I use 3 different colors to mark the chapters and page. I don't know what I would do without them!
Sometimes I need to read important family paperwork and sometimes I need to highlight certain paragraphs or my husband needs to sign in certain places. I love Post It Flags. They make it easy to keep track the important things. They make it easy to make sure all the signatures are correct.