In the spirit of better investing and in celebration of the first Worldwide Invest Better Day coming up on Sept. 25, Motley Fool analysts will be answering user- and reader-submitted questions leading up to the big event. "Ask a Fool" anything, and we'll do our best to help you invest better.

Net income is a company's earnings, or profits, as reported on the income statement. It's what is often referred to as the famous "bottom line." In the following video, analyst Austin Smith sheds light on why this is one of the most important, but also most easily manipulated, metrics in investing. He also examines the net incomes of different companies, explaining why a company such as (NASDAQ:AMZN)appears to have such extremely low net income. Watch the following video to learn more.

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