Of course, we're all trying to work out how to make money out of this here intarnetweb thing and it can be frustrating trying to work out how to do it. One of the best things to do of course is to go and pick the brains of someone who has already worked out how to do it. If they'll tell you, of course.
One group that will are over here. Their PPC tools page is clear and informative, their SEO tools one equally so. With those two covered you'll know how to make sure that your site turns up in hte engines properly and also how to monetize the resultant traffic.
There's also this very useful page of search engine marketing hints. The point is, it's better to work clever and to do so you'll want to take the advice of those who have been there, done that, before.
So click through those links and see how it's really done!