If you’re serious about search engine optimization and prepared to invest some money into keyword analysis, you can open an account with a keyword research Web site like Wordtracker. Simply go to the Wordtracker home page and click the Sign Up link (see below).
Wordtracker offers a wide variety of tools and reports to help you narrow the list of which keywords you should focus on in your blog posts to maximize potential traffic.
Other options similar to Wordtracker include the ones at www.Wordze.com and www.KeywordDiscovery.com. Like Wordtracker, each of these sites requires paying a fee, but free trials are available so you can test drive-them before you pay anything out of your pocket.