http://www.equimedia.co.uk/index.php?id=98&article=801365913
http://www.huffingtonpost.com/marc-ostrofsky/conversion-rate-marketing_b_1514963.html
http://www.huffingtonpost.com/marc-ostrofsky/15-steps-to-strong-keywor_b_1337859.html
http://www.success.com/articles/1626-modern-marketing-think-differently
http://better.tv/view/C465537P234239V1589421
http://www.wpix.com/news/morningnews/wpix-get-rich-click,0,7006913.story
http://video.foxbusiness.com/v/1363596096001