Most major search engines such as Google, Yahoo, and MSN offer pay-per-click advertising. Additionally, you can find search engine marketing opportunities that are associated with an annual fee such as ExactSeek. You can expect less traffic from second tier search engines like ExactSeek simply because these engines reach a much smaller audience. None-the-less, using second tier search engines can be a great value depending on how competitive the keywords are that can be associated with your product.

Search engine marketing is largely focused on using pay-per-click advertising to promote and sell your product. There are generally two approaches that you can take to best utilize this marketing method. The first approach is to use common keywords associated with your product or service. The second method is to use long-tail keywords or keyword phrases.

Search engines like Google make it very easy to find appropriate keywords to promote your website. Once you set up a Google Adwords account, you can have Google spider your site and propose relevant search terms. When evaluating the list, look for those search terms that are frequently searched for but face little competition. This results in a list of targeted keywords that you can promote.

You can also use the Overture keyword search tool which is available online. Simply enter the common search term or phrases associated with your website and evaluate search traffic results. The only downside to using this method is that you will only know how popular the search terms are but not the competitiveness of the terms.

Long tail keywords involve searching for common search phrases that have little traffic but also very little competition. Again, you can use Google or other tools to find these long-tail keywords. Taken in isolation, a few long-tail keywords won't generate significant clicks or revenue for you. However, when bidding on dozens, hundreds, or even thousands of these long-tail keywords, you may find that you can generate significant traffic and conversions.

One of the key aspects of search engine marketing, regardless of which search engine you choose, is measuring the effectiveness of your keyword campaigns. With the help of Google tracking, this is easier than ever. By placing a small block of code on your payment confirmation (thank you) page, Google conversion tracking can tie the sale back to the specific text link or display ad that generated the sale.

Evaluate this information on a regular basis and fine tune your online search marketing campaigns. You should also set daily spending caps for your keyword related efforts. Depending on the keywords you choose, the quantity of those keywords, and so on, your costs can be significant. Daily caps protect you by setting a maximum spend for your campaign.

Search engine marketing is a great way to promote a new or existing product or service if you carefully select your keyword phrases, place caps on your daily spend, and track conversions. When using this form of online marketing, pay attention to your successes and failures and reinvest where returns are positive.