Dividend stocks may be a valuable element in your investing toolkit. This is because, no matter what the overall market is doing, they offer income that's pretty much guaranteed -- particularly if you choose a company with a long history of dividend growth. Investors who seek out dividend stocks pay close attention to a company's dividend yield, and high-yield players -- as long as they have the financial resources to maintain these payouts -- could be particularly attractive.So, if you're looking to add gr ...