Welcome to the planet Google. Why not take advantage of the ever increasing array of free services they have to offer?
Google AdSense is a free program that empowers online publishers to earn revenue by displaying relevant ads on a wide variety of online content. Display ads on your website that are suited to your audience's interests, and earn from valid clicks or impressions.
For further details visit Google AdSense.
Once you have signed up for Google AdSense, you can take advantage of the new Google AdSense for Search service. This offers your users site search or web search while earning revenue from ads relevant to their search terms.
For further details visit Google Custom Search.
Or, see a demonstration here.
Easy-to-use features let you see and analyze your traffic data in an entirely new way. With Google Analytics, you're more prepared to write better-targeted ads, strengthen your marketing initiatives and create higher converting websites.
For further details visit Google Analytics.