The Junk Mail Indicator

Like many of you, I receive tons of marketing literature from financial newsletters and stock advisories. Although I generally pitch this stuff into the recycling bin as soon as it comes in, I recently noticed a substantial increase in junk mail that is trying to take full advantage of the bullish sentiment originating from this rally. Just take a look at this envelope:

Catch the next wave in the bull market? Wow! If memory serves, just a few short months ago most of the junk mail I was getting in talked about "How To Profit In The Next Recession," and "Go Short Now - 10 Stocks Set To Go To Zero." Which, of course, now has me wondering - is the junk mail we receive the ultimate sentiment indicator?