This will instruct search engines to avoid this specific link. The attributes found above helps define the relationship that a page or content has with the link it is tagged with. Nofollow links are mostly used in blogs or forum comment because this deems spammers powerless. This was created to make sure that inserting links is not abused by those who buy links or sell them for their gain. As a webmaster, it is your job to check your pages for these links. Inspect the code and see if the links are tagged with its corresponding follow or nofollow attribute.
Yes solid keyword data dramatically changes the game as far as rankings go. I have seen many tools that provide Cost per click stats and meaningless charts that confuse most users. the data Jaaxy provides helps drive “organic” traffic to your site on a consistent basis which will out perform PPC sites every time. I like how you say thinking like the end user, as I feel that way when I search. I dive into what people are looking for and it really helps drive content idea’s. I have seen great results from that.