Simple English on the Web

There are many educational websites that instruct users in correct English.  The simplest, most user-friendly site I know is the updated one at

http://owl.english.purdue.edu/owl/

All too many English websites are written in the wordy, pompously humorous style that has afflicted us (English educators) for generations.  The OWL site cuts through the clever rhetoric and goes right to the essentials.  It includes a section for learners of English as a foreign language.  It even covers the social aspects of academic writing, including e-mail etiquette for professors and students.