I don’t do this very often. Unsure whether it’s worth the effort, but am going to try.
I am writing some articles and want to pepper in the best SEO. Am staring with Google Keyword tool, but SEO Moz claims that it omits keywords to promote advertising. (Not sure how that would work. The KW tool is FOR advertising. They WANT you to see a shiny keyword and BID on it). BUT not sure how well KW Tool works for ranking competition (i.e., lots of searches but how well an I rank for it).
SEOMoz looks like best option but a bit pricey $99/month.
Any other sites that have worked well for you?