Yahoo+Clarity+Guidelines

Clear Headlines:

 * Summarize the content, with an appropriate tone.
 * Emphasize keywords relevant to the topic.
 * Telegraph hierarchical organization (using headings, subheadings) in parallel form.

Clear Sentences:

 * Use active voice.
 * Make sentences easy to scan (one point per sentence, front-loaded).
 * Keep subject and verb close together.

Lists:

 * Organize content for easy reading.
 * Should list items in **parallel** fashion.
 * Use consistent, logical punctuation.