I've read 6 million eBooks about making money online. Most of them, when describing how to keyword research effectively, tell you to check your competition in Google as part of the research. They say you should always use quotation marks around the words you are researching and this will show you the pages optimized for that very keyword. Well, I've been keeping an eye on one of my promotions and the keyword phrase in quotations is ranked on the third page (and rising fast) of Google while the same phrase without quotations is not even in the first 50 pages on Google. But I've had other campaigns where this wasn't the case (the rankings with and without quotations were similar).
So, the question is: Do you think it's wise to use quotations during keyword research?