Here’s an excellent infographic, courtesy of the inspirational http://www.econsultancy.com/blog.
Infographics are a brilliant way to explain complex concepts without words. As a visual marketing aid they’re hard to beat, especially online where reader attention spans are short.
Here’s an elegant graphic illustration explaining why it’s rarely worth the bother fighting for top Google positions using head term/money term key phrases. Drill down a bit, apply classic direct marketing-led targeting wisdom and you’ll enjoy better conversion rates.