This is the quintessential website for finding opposing viewpoints to inform students when writing persuasive or argumentative essays. A various amount of "hot-button" issues can be found here in a non-biased and equally represented way.
This is an easy way to make those cool vocabulary word clouds that you have been seeing. Great printable for students to learn literary device terminology and even essay writing techniques.
This website contains explanations and examples of "proper" formatting for specific styles, such as MLA. It is a wonderful resource for writing research papers and the like.