By JOSEPH RICE-HUGHESThe internet is shifting the way that people earn their living.

It’s creating new markets, and new opportunities.

But while it’s a huge growth area for the industry, it is also a big challenge for business owners.

 And it could spell trouble for some of the companies that rely on the industry to thrive.

How internet marketing worksIn the digital age, companies have to think like businesses, and there are two main parts to internet marketing.

The first is advertising.

If you’re a traditional online advertising company, you spend time on the internet and you send out messages.

These messages get picked up by people’s computers and spread through the internet.

Ads are paid for in real money, but they don’t actually get to your customers, just the message that gets shared.

The second part is the content marketing.

When you run an ad, you make it available to other people who will then click on it and buy the product.

The internet has created a massive opportunity for online advertising.

But it’s also a massive challenge for the businesses that depend on it to thrive and grow.

This story is a part of the Popular Stories magazine, a series by the BBC World Service aimed at informing and inspiring people around the world about the issues of the day.