Forums:

Whatever your topic, there's sure to be at least one forum about it. Subscribe to a couple of forums. Join in the discussions, answer questions, and ask pertinent questions yourself. Become known as an expert in the field. Then with each article reply you write, have a discreet link to your website in the signature file. What can be placed in your signature is often determined by the forum moderators. Do not spam the forum or you will be stopped from posting. You should be able to get a fair amount of traffic from a popular forum, and the people who click your link will already be familiar with your writing style.

Linking from and to other websites:

Look for websites which are similar to yours (but which do not compete directly). Ask the website owner for a reciprocal link. Be sure to pick link partners who match your customer profile. Try using a software program like Arelis to help you find link partners.

E-Zines:

Buy adverts in ezines that target your market. Perform a test to ensure that the return on your investment is enough to cover the cost of the adverts. You may save a considerable amount.

Newsletters:

Offer your visitors something of value, such as an eBook, in exchange for signing up for your newsletter. Write your newsletter so that it's tightly focused on your subject. You should publish your newsletter regularly, preferably once a week.

E-Books:

Write (or have written) a free informational eBook which you can give away to your clients and others. You can place links back to your website in the eBook.

Buy Expired Domain Traffic:

This may be the most expensive in terms of money, but also the cheapest in terms of time. You will usually get a traffic boost within a month. What is it that you're buying? You are buying traffic from a company which has invested in expired domain names.

They are domain names which are still registered on the search engines which get a certain amount of traffic. The previous domain name owners have not renewed the registration for whatever reason. The traffic from the expired domain name is redirected to your website. This is usually high quality traffic as only expired domains with relevant traffic is redirected to you. As always, you should undertake a test run to see if this traffic is suitable.

When you combine these techniques and apply them consistently over time you will find a rich source of targeted traffic coming to your website. This, combined with quality products will ensure the success of your online business.