Putting a property up for auction online is only half the job. Yes, it's possible buyers may stumble across it and place bids, but the chances for success are greatly reduced if that is all you do.
There is an opportunity to stand out from the crowd, be different and be responsible for the success. If you list a property for auction and then use open house previews, yard and neighborhood signs, internet marketing and local marketing, your chance for success greatly increases.
An auction naturally draws interest, whatever you can do to let people know about it increases your chance for success. Don't sit back and wait, be a maverick marketer and see your success soar.