Website Marketing Analyzer
I discovered a nice tool recently that helps you target, market and analyze the keywords and effectiveness of your websites … it is called Web CEO. It has tools for helping you find good keywords to focus on, for example, it calculates an index called the KEI which represents a ratio of the popularity of a keyword or phrase to the number of competing websites that use it. This helps you pick specific phrases that have a high enough popularity yet have a low enough competition to be worth going after. It has other tools for scanning your site and submitting it to search engines too. Check it out.