Browsers who are sifting through all the sections of the daily paper.. some
True, qualified buyers = 0%
If you were making such an important purchase, would you search via a few abbreviated text lines in the paper, or online where you can search, sort, view photos, virtual tours, maps etc at no cost?
and before it comes up... I know not every person in the U.S. has internet access, but in the very, very low probability scenario that someone searching for a home does not.. that is what family and Realtors are for.
You will note.. the comment below refers to an open house visit, not a buyer, which is consistent with the theme that those looking through the paper are casual browsers.