I've been meaning to ask this for awhile because they still practice this in a nearby MLS.
How common are open listings in the rest of PA or the country?
I swear I saw 20 different signs in the same yard once. Not only that but if you put IDX on your website, it has all of the contact information for the listing brokerages.
Not a heck of lot of incentive to spend marketing dollars, but I understand they also do use exclusive right to sell.