It's just about closing time for Google Shopping's free merchant listings. The iconic search engine has traditionally shown us products regardless of a commercial relationship with sellers, but they'll be required to fork over some coin if they want to join the party after the fall. Currently called Google Product Listings, the platform's name and format have evolved several times since the Froogle days. Google says the older model can lead to some shady and obsolete info, whereas charging vendors will "encourage them to keep t
