Forum Moderators: open
Do you only have a few keywords / phrases that will find your site or do people find your site under many different keywords and phrases?
But it wasn't always this way. There's a lot of work involved in finding and boosting search terms that show up only occasionally in the logs, watching the site search engine to learn what topics people are looking for that the site isn't currently covering, and in general leveraging every opportunity we can find.
This site, by the way, does no PPC at all.