The one thing i had on my mind outside of this list is keeping websites organized, somewhat simple, and pointing value to the right places. Britney's removal of thousands of low-quality pages that delivered results were an indicator of the importance of this. Google realizes that a few years back folks were just creating content thinking it would get them ranked, and their indexes were getting populated with pages that were worthless. I think organization and tidying up outdated posts/pages on sites will be rewarded.
SEM is better for testing than SEO. Because you can immediately turn SEM paid ads off and on, it’s a great strategy for testing. You can quickly revise your ad copy, target new audiences, and change landing page content to test your new tactics. This flexibility allows you to see differences in your strategies immediately. You cannot accomplish this through SEO, as it would take too much time to make changes and monitor differences in results.
Your social media strategy is more than just a Facebook profile or Twitter feed. When executed correctly, social media is a powerful customer engagement engine and web traffic driver. It’s easy to get sucked into the hype and create profiles on every single social site. This is the wrong approach. What you should do instead is to focus on a few key channels where your brand is most likely to reach key customers and prospects. This post will teach you how to make that judgment call. Get Started
This is not possible for everyone. But in some cases, in the case that you're getting into Google news, or in the case that you're in the recipe world and you can get visuals and images, or in the case where you have a featured snippet opportunity and you can get the visual for that featured snippet along with that credit, or in the case where you can get rich snippets around travel or around flights, other verticals that schema is supporting right now, well, that's great. You should take advantage of those opportunities.
The key distinction is that SEM is a broader strategy which combines paid search and SEO tactics. So, if you set up a PPC advertisement, but don't take steps to optimize the ad or the website it links to, this is a standard example of paid search. However, if you optimize your site and your search content with solid keywords, then you put money behind it to boost it on targeted audience's search pages, then you're dabbling in SEM.