If a business has closed in your area, you have always been able to TELL Google by going to Local Places Listing of that Business and Clicking on MORE and REPORT A PROBLEM.
Now it looks as if Google is asking you to "VOTE" in the Yellow Box on these questionable listings, should you have an opinion.
Want to learn more? Read the David Mihm Article at: Google Wonders - Is this Place Still Here?
President and Co-Founder
Acorn Internet Services