My criteria for selection included funds that held bonds with an average rating of investment grade and at least 5 years of returns.

FORBES: Pick Your Muni Funds Carefully

Among a selection of 100 top brand pages on Facebook, those using paid media reach an audience that is on average 5.3 times larger than organic audience alone, and 5.4 times greater than the total audience of top brand pages using no paid media with a similarly sized fan base.

FORBES: Facebook: Yes, Our Ads Work, Chapter 16

But like many market experiments, these suffer from a selection bias problem: Many of the people who want to buy or use these devices are already more environmentally conscious than average.

FORBES: Paying Attention To Energy Use