Rapid Keyword Research is a great keyword research tool.  Not only that, but it's very fast.  It offers quite a few features that can save you countless hours.  To start, you enter a keyword to search for.  Then you select which search method to pull results from.  Immediately, Rapid Keyword start populating keywords and keyword phrases.  Once you list is developed, you can copy the ones you want and move on to the next step where you can analyze the keywords in more detail.

When you analyze the keywords, you will find out how many competitors you are against, how many ads are running for each keyword on Google, MSN and Yahoo.  Once you narrow down your keywords to the ones you want to use, you move on the the next step which is managing your keywords.

With Rapid Keywords, you are able to remove duplicates, apply filters, split the lists, merge lists, reverse filters, combine 2 lists, wrap keywords for your ad campaigns, created misspelled keyword from your existing list and then one of my favorite features is the ability to group keywords.  This feature automatically organizes every one of your keywords into groups. 
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