What’s a Keyword? Why do I need them? As of June 2011, more than 3 billion searches happen every day on Google (and lots happen on Bing + Yahoo!, too). A vast amount of these people are looking for local stores and services for where they travel to. Building your site right and using the right “keywords” you can gain traffic and quality traffic to your website.
In SEO, The Terms that people type into a search engine are referred to as keywords. The important of keywords is that what do you think people type in to a search engine when they are looking for your product or service? This makes all the difference to the search engine with the right keywords and good concentration and relevant content on your website you will drive more traffic to your website which with any luck will turn around to more sales.
There are many tools around to help you figure out the keywords that are used the most. But with those remember the more Competitors you will have for those keywords so your content becomes vital to your rankings on the search engines.
Remember SEO is a marathon not a sprint. Results take a lot of work and a lot of time.