Actually the prospective buyers didn't mind at all after they were done looking they all came to me with any questions they had about the property. It all worked out good for everyone because there wasn't all the back and forth most all of their questions were answered before they left.
The people who ended up buying it stuck around and talked to me about the house for quite a while after the actual showing was over. I don't understand how anyone would buy something as expensive as a house without an extensive conversation with the owner.
I am not a realtor, but I would think having a long, extended conversation with the buyers could open you up for all sorts of liability after the sale.
Since it is law that a seller must disclose problems, it would be your word against the buyer's word if something went wrong after the sale. The buyer could say that they asked specifically about the problem during the long conversation and that the seller assured them it was ok.
I prefer to have any conversations about the house documented and between the professionals. That is what you pay your realtor for.
As a buyer, it also gives me some protection as my realtor would have it documented that a problem was not disclosed if it was not.