Dividends are a great part of any portfolio. Here are three keepers for any dividend investor.Dividends are a fantastic way to create passive income and are a prudent piece of any portfolio. The appeal of dividend stocks is they offer two potential routes for income generation. For one, you have the dividends, which are an indication of a financially strong business that can return value to shareholders. The second is the potential for the company's stock to gain value over time. Let's look at three dividen ...