Affiliate programs and advertising Advertising on industry websites. Or more properly creating a pay per conversion/pay per click affiliate program with industry blogs and websites.
* Pay Per Click Advertising: Mainstream pay per click via Google, MSN, Yahoo and others is very popular.
* Search Engine Optimization: Search engine optimization and link building. This is very popular, because it doesn't require paying for traffic like pay per click methods.
* Online Press Releases: Press releases are also an option. PR Newswire is expensive, but popular, if your product is unique and valuable.
* Social networking, Join forums related to your Web site content, Seo keyword optimization, Create an account at Google webmaster tools, Google analytics (free) and review reports for key word usage, traffic stats, Google will also notify of any errors.
Hope this help you!!