Déjà vu all over again

Here is a comment from a new listing in Marblehead this week:

First showings @ open house 4/6,7. Offers held until 4/7 5pm.

In recent weeks houses have come on the market and offers have been accepted before the first public open house. Holding offers until the end of the open house allows the seller time to receive more offers. It also encourages buyers to make their best offer, which may well be above the asking price.

Did somebody say 2004?