I think that whenever you have an opportunity for move exposure, it's a good thing. The statistics on homes sold to people looking at an open house are pretty low, so you have to look at the opportunity costs involved. If you are selling By Owner, and you've got nothing better to do, then go for it. If you have a Realtor, then you should discuss with him/her a program that works for both of you. Your Realtor may not feel that holding an Open House is the best use of his/her time, but may offer other alternative solutions to getting your home sold. Personally, as a Realtor myself, I feel that Open Houses benefit me more than my sellers since it is an opportunity to meet more potential clients, but in a slower market like we are currently experiencing, every little bit of exposure helps.