Google claims their users click (organic) search results more often than ads, essentially rebutting the research cited above. A 2012 Google study found that 81% of ad impressions and 66% of ad clicks happen when there is no associated organic search result on the first page. Research has shown that searchers may have a bias against ads, unless the ads are relevant to the searcher's need or intent 
Which one wins in a fight? If I were a betting man, I’d put my money of organic search traffic. As exciting as it is to see a quick surge in traffic from an effective PPC campaign, I’d take sustainability over a short-lived win any day. And that’s just the surface. I’ve gone over several of the benefits that organic search traffic can have on your business. I’m talking about the kind of results that correlate with cold hard ROI.Use the insights, implement the action steps, and stay competitive.
Use Facebook Insights to gain a better understanding of your Facebook fans. You can then target specific messages to meet the specific needs of subsets of your audience. For example, if you’re selling clothes and have written an article on the latest fashion trends for women, you can target your post to appear in the news feeds of women who have expressed an interest in clothes. Targeting options include Gender, Relationship Status, Location and Interests, etc. To target your Facebook post, simply click the targeting icon at the end of your post before you click Publish.
The piece on generating demand for branded queries rather than just product-based ones is particularly interesting here. It sounds as though it'll be more important than ever to have a strong brand in order to succeed (rather than just having a well-optimized site -- and ideally, having the strategic, technical, and creative sides all working together cohesively). Perhaps it's possible that brand exposure through things like answer boxes can still deliver some value too, even if it's difficult to measure, and CTRs are diminished?
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).