Every serious on-line writer needs to know at least something about keyword research. I write on-line about five years now and if I can expose only one skill which should be mastered to get at least some traffic to web pages, it's definitely a keyword research.
I tried many of available tools among which large percent just don't deliver what should. So I decided to make a lit of 10 best free tools which can help us building a list of keywords with traffic / earning potential. For your convenience I present them right here and right now.