It pays to spend extra time to focus on the keyword and phrases that catch the most traffic, and more to the point most relevant traffic.
Do research in detail to find the target keywords and phrases. Use the 'view source' feature of IE to check out the keyword Meta tag of each top-ranking site. Select the site that lists lots of keywords. Repeat this exercise with at least 10 top listing sites. Search in Google and Overture will yield more keyword ideas. You will soon have a long list of possible keywords and keyword phrases.
Enhance the keyword kitty by a search on http://www.promoteindia.com/keywordtool-beta.htm.
Access WordTracker to compile results. Then, sort out the strongest keywords by KEI.
To improve your KEI search, use the spreadsheet available at http://www.seo-works.com/seo-resources/keyword-effectiveness-rank.html.
Once you have sorted out the desired keywords, highlight the most profitable ones.
Develop at least 30 pages of content, by taking top 10 on the list and creating content. Repeat the similar process with in batches of 10 top keywords/phrases every time.