I wonder how many here refuse to go to posted locations (which certainly is the preferred action as compared to giving them your business despite their infringing on your rights) but never take the moment to tell the proprietor the reason that you are not giving them your business? I recently was ready to go into a retail location and saw that it was posted. I entered the store and asked for the manager or owner, and when he was present told him that I was planning on shopping there but now would not because of his posting. While we ended up having a bit of a discussion about how those he feared would ignore his sign and that law abiding and licensed gun owners were no threat to him, his staff or his customers, I was surprised when he said I was the very first person to ever make this complaint. He said he posted the sign shortly after concealed carry became legal, and that he believed his customers preferred "knowing" that no one in the store was carrying a gun, and that he could live without my business.
To a great degree we lose the power we have when we fail to express our displeasure at the posting of a business. Our numbers are small enough that without our bringing the issue directly to the attention of the business owner or manager, they might never become aware of the business that they are losing. There was a recent post on this forum about someone not shopping at a car dealership because they saw it was posted, but no mention was made of their complaining to management and expressing how they lost the sale of a car because of their anti-gun position.