If you’re finding that you’re using the same words over and over again, this website should help. You’ll be able to count the frequency usage of each word in your text.
An interactive portrait of America's name choices over the past 125 years. You can zoom in on popularity timelines of almost 5000 names. Requires java.
The CSU site guide to the writing process, divided into 9 parts. The emphasis is on articles, reports and/or essays, but the information is useful for all sorts of writing.