What is it?

A dividend is the distribution of reward from a portion of the company's earnings and is paid to a class of its shareholders. Dividends are decided and managed by the company’s board of directors, though they must be approved by the shareholders through their voting rights. Dividends can be issued as cash payments, as shares of stock, or other property, though cash dividends are the most common. 

Who is interested?

The financial community and investors.

What does it tell me? 

A dividend measures a company’s capital allocation policy and return of capital to shareholders.