Floating Rugs
Floating area rugs are a big mistake people make. They're very distracting for the eye because they chop up a room and could be dangerous if you trip over them.
Use a measuring tape to create an outline to get a feeling about where you want the rug actually placed before going to the store. A rug should always be connected to furniture — an anchor for the seating group. For an arrangement, put all the front feet of the furniture on the rug.