Here is a good video available from Scobleizer where you can learn more about keyword selection from a search engine marketeer. If you are interested to boost your traffic from search engine, there are several terms regarding keyword selection. In order to define the particular niche for your site, the right keywords is quite important.

Basically, keyword matching allows you to control how precise a user’s search from a search engine in order to locate your site. Defining how broadly or narrowly your keywords helps you reach the audience you want. In general, the more targeted your keywords are, the more likely you are to reach potential customers.

The primary matching options you can apply to your keywords are:

• Broad Match – Broad match allow your site to be targeted for a broad range of keyword. eg. Used book dealer, Buy used book, Used and rare book etc
• Phrase Match – Phrase match is when a phrase in the exact sequence is typed into the search engine.
• Exact match – Exact match is the most precise method for targeting your keywords.

So knowing what keywords that best suit your site is another important step for search engine optimization, SEO. Happy Hunting for your keywords!.