If you do a simple keyword research, you will see one of the high traffic niches is digital marketing. If you research for the cost of digital marketing, you will see businesses are offering very high amount of money on digital marketing. Therefore, based on how much interest is there in marketing and how much money they are spending in marketing, a career in digital marketing can be highly lucrative. One of easiest ways to earn as a marketer is to become a social media influencer. You can do sponsored content for brands, businesses, and companies. As a social media influencer, you can earn money through endorsement deals.