There seems to be several more old wives tales about sweeping. For instance, you should never sweep your house on a Monday, else you might sweep away the family's 'money luck' for the entire week.
Be careful to never let a broom fall flat on the floor. And if it does, do NOT step over it~it will double your bad luck.
Never sweep the dirt out the front or back door at night, or you might sweep dirt into the faces of the ghosts and spirits that stand outside the cabin door in the dark. In fact, it seems to be bad luck to even sweep at night at all.
It is bad luck to stop sweeping a room before you finish it. And you should never burn the 'sweepings' in the fireplace or wood stove. They must be disposed of in some other way~like out the back door in the daytime.
In looking around the Internet, I also found this: When moving to a new house, if the broom is moved with the rest of the household furniture, you will not be successful. The broom should be burned while standing in the corner, being watched meanwhile, to prevent the house from taking fire. (I'm still puzzling over how one accomplishes this, LOL!)