I had heard for a long time that "open houses do NOT sell houses" . I had also heard that the point of open houses, is to appease the home seller, and advertise your SELF.
My experience has been that open houses do do the latter, however they ALSO do sell houses. I have had the experience more than once of a listing selling due to an open house.
I think open houses work mostly on highly trafficed areas. If you have a listing and want to do an open in a non-high traffic area, it is best to advertise it well and offer some sort of incentive.
A newer idea seems to be , "twilight" opens. Where you have your open later in the day, say 4-8? Wine, cheese, more relaxing atmostphere. I love the idea....what do you think? Have you tried this and if so, what kind of results did you achieve?