A Different Perspective To Keyword Research
Try different search engines. Do some of your keyword research on Bing (you'll need to sign up for a free Adcenter account): Bing - Keyword Research Tool.
Even Youtube has a keyword engine that uses a different database: https://ads.youtube.com/keyword_tool
And speaking of different perspectives, Yahoo has a cool 'trends' toolset that you can be used for looking at top trends and analysis of them. Check out Yahoo Clues at: Yahoo! Search Clues
Don't forget some of the 'other' keyword idea tools like Google Trends
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