While short-tail keywords are often searched more frequently, it is more difficult to rank for them on search engines. Targeting long-tail keywords, on the other hand, gives you a better chance of ranking higher (even on the first page) for queries specific to your products and services—and higher ranking means more traffic. Plus, as search engines and voice-to-text capabilities advance, people are using more specific phrases to search online. There are many free tools available to help you find keywords to target, such as Answer the Public.
Content-Delivery Networks (aka CDNs) are a great way of speeding up page delivery across the world. Google and other search engines are inherently concerned about the speed of your site and page content. Use Amazon's AWS, MaxCDN or any number of other tools out there to leverage CDNs along with browser-caching tools like W3 Total Cache, WP Super Cache and others.
But some schema extensions are targeted at search engines. These code snippets tell Google which elements you would like to display next to your links in the search results. Of course, Google isn’t obliged to follow your instructions, and they can totally ignore the schema you insert in your code. But often, Google honors the schema you insert in your pages.
Historical refreshes of content is a good thing, especially if some of your content has expired. Note, this does not mean re-doing your content; simply refreshing it to bring it current if it isn't already evergreen content. Look at ways you can update outdated content on your site to drive more traffic through visibility on search engines like Google.
While with search advertising, you’re paying to show up in the top spot for relevant searches, with social media advertising you are paying to show up in relevant feeds. With both forms of advertising, you can specify the type of audience in front of which you’d like to appear, but with more psychographic data, social media offers superb targeting.
For some reason I had to delete some pages, these pages are using the HTML suffix, so I blocked them in robots.txt use Disallow: /*.html, but it’s been almost a year, I found that google robot often capture these pages, How can I quickly let Google completely remove these pages? And I have removed these URL from google webmaster tool by google index-> remove URLs, but Google still capture these pages.