Targeted Traffic: Your Audience
Think of targeted traffic as—your audience. People who are specifically searching for information or products that you may provide through your website. Long tail keywords produce the best results as far as bringing searchers to your site who are looking for exactly what you provide.
For example, let's say you are a searcher looking for a specific brand of organic green tea. You would obviously search the exact brand of green tea that you are searching for, unless you are searching for different brands of organic green teas.
If someone is trying to find a site that sells this green tea, they may be searching for the product at the best price and use keywords like: organic green tea cheap, organic green tea sale, organic green tea coupon, etc.
Although the long tail keywords are used less frequently, in experience focusing on a collection of targeted long tail keywords is what is going to draw the most amount of targeted traffic to your website.
Research shows that surfers more often use less keywords to attain general information about their interest. After the potential consumer is ready to make a purchase they will focus on a more specified search like, "Majestic" organic green tea "Fairway" market, or a specific city, i.e. Woodside N.Y.
If someone finds your site and buys a product through it, it means that the search words they used converts to sales. If they only visit your site, read the information and leave, those specific keywords tend not to end in conversion.
To paint you an ultra-clear picture, think of your website as a gym. Everyone who walks through the door is considered a prospect. You want to convert as many prospects as you can into members: people who will visit your site and make purchases on a regular basis.