Overture's counts may be skewed by bid management software, rank checking, and dubious partnerships, but if you'reinterested in paid listings, this will give you an accurate picture of the Overture inventory. Also comes in handy for brainstorming keywords, with functionality similar to Wordtracker's comprehensive search.
it's free!
The Keyword Selector Tool will give you an approximate idea of the traffic of your keyword and other possible additional keyword phrases for you.
The tool is actually intended to help you optimize your pay per click campaign on Yahoo! but it’s also very useful to discover keyword for your organic search engine optimization.
There is also an interesting free tool that does the same job as the overture Keyword Selector Tool but it gathers the results in a more friendly way. With this tool it’s also an easy job to export all the discovered keywords to an excel spreadsheet or to a text file for deeper analysis.
The tool is
Other resources for your keyword discovery analysis are
Please use our free Keyword difficulty analysis tool to measure the real difficulty for a keyword to perform on search engines.