This topic seems actually quite controversial. Google answered the question by what could be taken as a denial. But their answer was kind of open to interpretations. And on the other hand, there are studies (one of them from Moz) that showed linking out has an impact. So, how can you be so assertive? Is it something that comes out from your own experiments?
In addition to helping you find keywords you should be bidding on, thorough keyword research can also help you identify negative keywords – search terms that you should exclude from your campaigns. Negative keywords aren’t terms with negative connotations, but rather irrelevant terms that are highly unlikely to result in conversions. For example, if you sell ice cream, you might want to exclude the keyword “ice cream recipes”, as users searching for ice cream recipes are unlikely to be in the market for your product.
That’s a massive problem. And it’s one that organic search traffic solves. If you want to correlate your marketing efforts with a solid ROI, pay particular attention to where your customers are coming from. If you know where they’re coming from, you can calculate what you invest in each marketing channel, and what return it yields for your business. Some people believe that PPC is better for calculating ROI because it’s more measurable. That’s misguided. You CAN determine what an organic visit is worth to your business in terms of a hard dollar value.
BrightEdge research supports that a blended approach is best for delivering high performing content. Not only will combining organic and paid search increase website traffic, but it will offer a bigger return on the investment. Take Retail, Technology and Hospitality industries, for example — organic and paid search combined make up more than two-thirds of their total revenue.