Did you know that you can advertise your open house information on Zillow, for free? The information will show up on the site a week before the event, and is automatically removed when the open house is over. Here is a short video that walks you through the process:
And it works! Below is a quick story from Angie, who I met at the NAR convention last year. She entered the open house info on Zillow, canceled the open house but forgot to take the info offline. 12 people showed up, she got a buyer and actually double-sided it!