Door hangers are a more passive form of door-to-door advertising. In this instance, fliers or small ads are placed on consumers' doors. No actual interaction with potential customers takes place ...

Now that we know the door hangers are not part of a scam, we are publishing this amended story. More from CBS News. 4 carjacking suspects arrested after pursuit by state police ends in Chicago.

Last week, 11Alive showed video of what appeared to be Peterson taking one of Harris' door hangers and replacing it with her own about an hour after he left one there.

Almost exactly an hour later at 7:18 p.m., his opponent Christina Peterson went up to the same house, attached her own door hanger, and is seen on camera making a yanking motion before running ...

GRAND RAPIDS -- Hoping to dredge up new information about cold cases, Grand Rapids Police have started a new "door hanger" program to remind residents of unsolved homicides in their neighborhood.