GoodStyle

Write factual information.
Give concrete advice.
To make editing and elaboration easier, avoid use of "I" where possible (except in your WikiHomePage).
Write and sign first person accounts when reporting experience not easily reduced to facts or advice.
Place words where they are easy to read, which isn't always at the bottom.
Edit pages to emphasize the flow of ideas, not the chronology of contribution.
Be concise and stay OnTopic for the page.
Use language you'd be comfortable reading out loud - use vs utilize - and keep it simple. Simple language often communicates better.
The server has very simple TextFormattingRules. Start each line without spaces, and separate paragraphs with a blank line. You can run capitalized words together to make HyperLinks.
Use horizontal separators to make things easier to read. When there are lots of different comments with no separation, they can get confusing.
Edit only when you think a page is lacking - don't just sign your name at the bottom of every page.
Don't delete unless doing so adds value.
Don't say things that are designed to make others mad. Practice civility and understatement.