I am afraid you are asking the wrong question. A site is just a medium, a channel to present a product or service. What you can market is that product or service (by means of your web site). Formulated the way it is now, your questions sounds like "What are some good ways to market an advertising flyer ?" :)

Thus you can tell us first: what is your product/ service, what is its value proposition (why exactly should a customer need to buy it) and what is your target customer audience. From there on we can think how your site can be best used to connect your value proposition with the audience.