From Jakob Nielsen: Linear vs. non-linear. Author-driven vs. reader-driven. Storytelling vs. ruthless pursuit of actionable content. Anecdotal examples vs. comprehensive data. Sentences vs. fragments.
Search engine to locate duplicated materials on the Internet
From A List Apart: What makes a great copy shot? Is there a formula? And can understanding advertising help us write better web copy?
how to quickly spot unsubstantiated claims that threaten to drain the credibility right out of your copy
the same words cropping up again and again in Web sites and news releases