Leaving in a huff and refusing to spend money is one thing, but no good if you don't take the time to let the business know. In MO, you could have just said heck with it, carried anyway, and left if you got caught. Felt bad or mad, and gone on with your life. I try to make it a point to let those businesses know. Sent the receipt for 4 new tires I bought at the competition to the local posted tire store recently. Make a quick email to one posted movie theater evey time I go to the non-posted one across town. In FL, I could just CCW anyway and ignore the signs, and I sometimes do, but I applaud those that do more than preach to the gun-board choir when they find a posted business. Well done.