Mary Teske, the general manager of Schubert & Hoey Outdoor Advertising reports, "The Bush Miss Me Yet? billboard was paid for by a group of small business owners who feel like Washington is against them. They wish to remain anonymous. They thought it was a fun way of getting out their message."
Various people have stepped forward around the country to claim credit -- the latest was a gentleman in upstate New York from what I can tell in his e-mail. But, it's all local, folks.
Of course people are going to start taking credit for it now that it's the latest piece of viral media. I'm sure that Teske knows more than she's able to tell, and that there are more people raising their hand on this one than should be credited. But moreover, if this is the product of struggling "small business" people, wouldn't it stand to reason that they should be budgeting their money in a more "fiscally conservative" manner instead of using it to take pot-shots at the Obama administration?