My vote is for WordTracker...Out of all of them it probably has the best keyword tools/resources. I think they give out a free test drive...check it out for yourself and you be the decider.
Most of peoples are using Google Adwords and google trends to check some accuracy of these keywords. Thanks Eric
I'll recommend a pretty simple Firefox Addon, SeoQuake. Thats basically what I use with the other free SEO tools, it gives Keyword density and all, as well as a whole bunch of administrative tools
Determining your prime keywords should be relatively simple. Just think like a user- when someone is searching for your website or real estate blog what terms would they be looking for? Let's take the case of Miamism.com, Rick and Ines Garcia generally sell "real estate" and "homes" in "Miami Shores." They are more liely to sell a "condo" on "Miami Beach." So, logically, they should select keywords like "Miami Shores Homes," "Miami Shores Real Estate," and "Miami Beach Condos." ------------------- altheakim