The process of determining which keywords are best suited for users to find your site. There are various tools that can be used as part of a keyword analysis.  A keyword analysis involves several components including:

• Compiling a list of keywords based on relevancy, competitiveness, search volume, and seasonality just to name a few.
• Reviewing Competitors Sites
• Culling the list of keywords
• Evaluating Search Volume/Traffic Potential
• Creating Keyword Baskets
• Monitoring Keyword Activity
• Understanding the language of your audience

Popular Tools Used in a Keyword Analysis include:

• Keyword Discovery
• Wordtracker
• Google AdWords Keyword Tool
• SEOBook Keyword Suggestion Tool
• MSN adCenter Labs Keyword Forecast Tool