1. Submit Your Site to Key Directories. Be sure to list your site in the free Open Directory Project (www.dmoz.com), overseen by human editors. This hierarchical directory provides content feeds to all the major search engines. Plus it provides a link to your site from an information hub that Google deems important.
Yahoo! Directory is another important directory to be listed in, though their search results recently haven't been featuring their own directory as prominently. Real humans will read (and too often, pare down) your 200-character sentence, so be very careful and follow their instructions (http://docs.yahoo.com/info/suggest/). Hint: Use somewhat less than the maximum number of characters allowable, so you don't have wordy text that will tempt the Yahoo! editor to begin chopping. Business sites now require a $299 annual recurring fee for Yahoo! However, Don't pay that, a Yahoo listing is included in our package 2 price.

2. Submit Your Site to Industry Sites and Specialized Directories. You may find some directories focused on particular industries, such as education or finance. Be sure to register with these. You probably belong to various trade associations that feature member sites. Ask for a link. Even if you have to pay something for a link, it may bring you the kind of targeted traffic from an info hub that you need. Beware of directories that solicit you for "upgraded listings." Unless a directory is widely used in your field, your premium ad won't help. Marginal directories come and go very quickly, making it hard to keep up. Don't spend time here trying to be exhaustive.

3. Request Reciprocal Links. Find complementary websites and request a reciprocal link to your site (especially to your free service, if you offer one). Develop an out-of-the way page where you put links to other sites -- so you don't send people out the back door as fast as you bring them in the front door. Your best results will be from sites that get a similar amount of traffic to your site. High-traffic site webmasters are too busy to answer your requests for a link, and don't have anything to gain. Look for smaller sites that may have linking pages.

4. Write Articles for Others to Use in their Newsletters. You can dramatically increase your visibility when you write articles in your area of expertise and distribute them to editors as free content for their e-mail newsletters. Just ask that a link to your website and a one-line description of what you offer be included with the article. This is an effective "viral" approach that can produce hundreds of links to your site over time.