I saw this at the bus stop last week and I found it rather amusing.

First of all, while there are some hospital shuttle buses around Boston, there's a pretty low probability of a heart doctor standing around in the cold down by the railroad tracks awaiting the #70. Of course, we're not just looking for heart doctors here, but open-minded heart doctors. Who else would entertain the notion that a product called "The Greatest Vitamins in the World" could revolutionize the practice of modern medicine?

As if the advertisement wasn't suspicious enough, I think the absurdly long URL qualifies this ad as spam. "Doctor, perhaps this patient is suffering from harmful vitamin intake. I read about this condition on the highly reputable dontforgettotakeyourvitimins1024 dot com... slash... leaston17882 website."