I would like to share with you quite interesting tool I just recently discovered.
We all know that long tail keywords are much easier to rank for, have higher click-through rates and higher conversions. But how do you find them?
Well, this tool ease a lot of pain because it scrapes results from Google's suggestion box. (You know the one that appear below the search field when you start typing in your keyword into Google.)
You can find it here: http://ubersuggest.org
Results are divided in sections by ten. It takes your keyword and add to it all variants starting with letters A-Z and numbers 0-9
You can then select only keywords you desire and click Get (on the right side of the page) to see them in text only format and easily select them.
Hope you found this useful.