I love saying goodbye to things for better substitutes. Answers.com is quite possibly the best thing I’ve found for… well learning things. If you are unsure what a word means such as tintinnabulation you can just go to http://answers.com/tintinnabulation to find out. Very awesome. This isn’t just a dictionary. It’s also a thesaurus, encyclopedia, and more. You can search a wide variety of topics such as Strong Bad, to Super Mario. They also offer a program that you can download to your computer, that will take you automatically to a words meaning by alt-clicking on it anywhere on your computer screen. Pretty nifty. So say goodbye to m-w.com or dictionary.com… and hello to Answers.com.