Used office paper is recyclable paper no matter what, right? Wrong. When you use a paper shredder, you are shortening the length of the paper's fiber, which decreases its recyclability. So putting shredded paper into the recycling bin with full sheets of paper can decrease the viability of the entire load getting recycled. The best thing is to tear unimportant documents by hand into smaller pieces. Use a paper shredder only for truly confidential and personal information.