The truth is you don’t need to pay for Keyword Research tools that are being over used. There are many free keyword research tools that work very well.
Yahoo Free Keyword Research Tool:
The Overture Keyword Selector Tool was the first and best free keyword research tool on the market. It still continues to be a solid tool and if you are just looking for some ideas, then this is the tool for you. You can get access to the free Overture keyword research tool here:
Google Free Keyword Research Tool:
The Google Keyword Tool is one of the best free keyword research tools available. It works very different than the Overture tool. Overture will show you all of the major variations that contain the keyword or keyword phrase you are looking for while Google will show you all of the top related keywords and keyword phrases.
Thesaurus
Absolutely NOTHING beats a thesaurus to find synonyms. Using a thesaurus as an additional keyword research tool will allow you to grow your keyword list by leaps and bounds so don’t forget to check the thesaurus.
And last but not least check the Dictionary
By reading through all of the approved definitions of a keyword you will almost always discover additional keywords to further expand and grow your list. The dictionary is also a great source for negative keywords as your use may not imply the same thing across the board.
I almost forgot the most powerful keyword research tool available, your brain. It may be slow at times and it may freeze up on you from time to time but its very powerful at coming up with great keywords if you will just sit down and use it.