I didn't know "majorly" was really a word? I mean, a formal word used in writing?

"She did a little research and realized that beauty brands create and then majorly mark up their products by mixing lots of colors."

Has the quality at BusinessInsider taken a major dive lately? I read a few of their articles when they just launched, but now I am disappointed each time I click a link to them.

Regardless of the article, how do you all feel about the product?