martinibuster - 7:08 pm on Dec 9, 2011 (gmt 0)
Plantet13, you consistently ask good questions and inspire blog posts out of me. LOL.
I believe that the profitable phrases are shopping related followed by DIY project phrases. Least profitable phrases relate to killing time and doing homework.
Shopping phrases are those with product names/kinds of products in the phrase, as well as phrases related to prices and discounts and reviews.