Many page owners think that organic reach (the number of unique individuals who see your post pop up in their news feeds) is enough to make an impact. This was true in the first few years of Facebook but is no longer the case. Facebook, and many other social media networks is truly a pay-to-play network. Facebook, Twitter, Instagram, and LinkedIn are all on algorithmic feeds, meaning posts are shown to the user based on past behavior and preferences instead of in chronological order. Organic posts from your Facebook page only reach about 2% of your followers, and that number is dropping. Facebook recently announced that, in order to correct a past metrics error, it is changing the way it reports viewable impressions, and organic reach will be 20% lower on average when this change takes effect.
Cost and Sustainability. While it’s not totally free and easy, SEO can be more cost-effective in the long run as it will give you a targeted and relevant results that you are aiming for your business. With regards to sustainability, even with the smallest of a budget, you can still develop a plan that will still give you the quality of results and still keep the traffic that your business is getting.
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?
Companies that employ overly aggressive techniques can get their client websites banned from the search results. In 2005, the Wall Street Journal reported on a company, Traffic Power, which allegedly used high-risk techniques and failed to disclose those risks to its clients. Wired magazine reported that the same company sued blogger and SEO Aaron Wall for writing about the ban. Google's Matt Cutts later confirmed that Google did in fact ban Traffic Power and some of its clients.
11th point to me would be too look at your social media properties, work out how you can use them to assist your SEO strategy. I mean working on competitions via social channels to drive SEO benefit to your main site is great, working on re-doing your YouTube videos to assist the main site and also working on your content sharing strategy via these social sites back to the main site.