A link to a piece on BIP....
"In the never-ending quest for quirky holdings that might be able to deliver equitylike returns with little or no correlation to the U.S. stock market, as well as a decent dividend, here's a look at Brookfield Infrastructure Partners..."

http://www.thestreet.com/story/10421479/1/an-infrastructure-play-to-help-diversify.html

The author admits that BIP (and others like it) are a little harder to follow and analyze, but makes the case that it is still a good investment.