The June 9 2013 article in the Tennessean ‘Businesses step up efforts to attract LGBT customers” was certainly a breath of fresh air. While I have seen huge movement toward acceptance in Nashville, there is still a long row to hoe for us to catch up with the more advanced areas of the country.
One point you did not mention I think is significant: Although there is a large audience in the LGBT market, I think the most significant impact of the ads is to let the much larger progressive heterosexual community know that those businesses are not bigoted and are supportive of human rights.
I, for one, am much more likely to give my business to a company that stands up for the rights of all people. Of course, there is also the chance of backlash, so I additionally applaud the courage of a business that will risk losing income in order to stand up for others.