In light of the recent tragedy, and my heart goes out to everyone affected by this maniacs rage, there lives are changed forever even if they were close by but not injured, I am re-thinking establishments that ban concealed carry.
Some locations ban carry in such small print that you can legitimately miss it. If you do, and are challenged by a security guard, don't lie, and leave immediately when they ask you to. That should keep you out of trouble. However, if there is a big sign, well, for me...I probably don't need anything there I can't get somewhere else.
There are a lot of anti-gun people screaming for more control in light of the tragedy in Colorado. However, there are a multitude of stories in the unbiased press that detail incidents where legally armed citizens prevented such tragedies or stopped criminals in their tracks.
Stay alert, stay safe and let the "No Guns" establishments that are likely to be cropping up know that if they don't want you, you are voting with your feet and taking your business elsewhere.