"Ads for Spider-Man 2 will be placed atop bases at major league ballparks during games from June 11-13 as part of a promotion announced Wednesday."
I've seen the trend over the last few years, but this is just plain disgusting. If everything is for sale then we have no culture that we care about preserving.
From "True Dreams of Witchita" by Soul Coughing:
"And you can stand
On the arms
Of the Williamsburg Bridge
Hey man, well this is Babylon"