Forum Moderators: Robert Charlton & goodroi
The most important thing you can do is make sure that your overall link structure makes deeper pages easily accessible. Make sure your pages all have unique page titles and unique meta descriptions. Also, eliminate any sources of duplicate urls that resolve to the same content. These steps alone will help to maximize your natural search traffic.
Then study your server logs, see what search terms are bringing you low-level Google traffic and see if the url they are sent to makes sense for that search. Beef it up if its ranking isn't already near the top.