The stats tell the truth: the top ad spot gets about 2% of clicks (CTR) on average, whereas the top organic spot gets about 20 times that, 40%. Why? Because people trust it more. They trust the Google brand to deliver the most relevant results to their search query. Anyone paying for an ad might be perceived as just trying to hijack that process for a quick buck. It generally takes 3 months to earn the top organic spot with Google (there are exceptions to this), whereas it takes around 3 minutes to place an ad to get the top spot. Society values those who have earned their way to the top in any field, rather than bought their way.
Plan your link structure. Start with the main navigation and decide how to best connect pages both physically (URL structure) and virtually (internal links) to clearly establish your content themes. Try to include at least 3-5 quality subpages under each core silo landing page. Link internally between the subpages. Link each subpage back up to the main silo landing page.
Although it may have changed slightly since BrightEdge published its report last year, the data still seem to hold true. Organic is simply better for delivering relevant traffic. The only channel that performs better in some capacities is paid search ads, but that is only for conversions, not overall traffic delivery (Paid Search only accounted for 10 percent of overall total traffic).