At this content-rich site the main page's links break further down to sentence level, paragraph level, and essay level. The site also contains samples of business writing and research papers, PowerPoint presentations, interactive quizzes, Q&A service, book resource list, on-line resource list, quotes from famous people on writing, and "grammar goofs" gleaned from college and high school writing. The "goofs" page does contain some innuendos. Besides a well-linked index, the site offers its own search engine.
