How to Invest in Digital Advertising
Think of all the free stuff we have access to. If someone from the 19th century showed up today, they'd marvel at the tools we can use at no cost: broadcast TV, radio, internet search, email, mapping and directions. This list goes on -- it's truly amazing.
How can we afford all of this?
There's an old saying in advertising: "If you're not paying for it, YOU are the product." And therein lies the rub. All of those things are free because you are served advertisements.
Source Fool.com


