This is a crucial area. If you do not have schema markup and rel="author", you are costing your business money. It is as simple as that. As an example, say I want to make spaghetti (pasta) for dinner I search for “Spaghetti Recipe” and instantly I see some great markup in play, but one competitor has no markup and no rel="author" they are losing business in my eyes. Wouldn't you agree?.
Consumers only have so much attention and so much money — and for each, they set a “budget” for how much they want to spend with the brands that are important to them. Consumers invest their attention and money into big promotions. Typically, big promos have big results for the retailer, but the flip side is that the promo has emptied the consumers’ budget for attention and money. If the promo is big enough, it even entices some consumers to overspend a little bit (or a lot). When consumers have expended or exceeded their budget, they tend to engage with your brand less. They become immune to marketing messages and spend fewer dollars.
One of the things that makes social media a bit more attractive than search engine optimization is that you get to maintain a bit more control over your success. You can always find new ways of improving your strategy and you can learn from your mistakes and your wins so that you can improve your traffic in the future. The same can't really be said about SEO - although it's very clear what not to do, it's not always as clear exactly what strategies can help you improve your ranking.
At our agency, we work with sites of varying sizes, from very large to quite small, and recently, we have noticed a trend at the enterprise level. These sites aren’t relying as much on Google for traffic any more. Not only are they not relying on Google traffic, but also, the sites are getting less than 10 percent (or slightly more) of their organic traffic from the search giant.