In this excellent post, SEO and Digital Trends in 2017, Gianluca Fiorelli writes, "In a mobile-only world, the relevance of local search is even higher. This seems to be the strategic reason both for an update like Possum and all the tests we see in local, and also of the acquisition of a company like Urban Engines, whose purpose is to analyze the "Internet of Moving Things."
Great content. Although I disagree with ‘the best times to post’ section. It is important to understand your audience. For example, if your brand/business is in high school, there will be low engagement until 2-5 when they are out of school. I highly suggest using instagram analytics (a subsidiary of facebook analytics) which gives you all of the details on when your followers are active.

Start browsing through articles in the same category as your content. Like the articles you genuinely like, and downvote the ones you’re not interested in. Do this for a few minutes every day.This step is very important – StumbleUpon uses the data to learn what kind of content you like. When you submit content, StumbleUpon will show it to other users who like the same kind of content.Act like your ideal reader, and that’s who StumbleUpon will share your content with.
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.
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A breadcrumb is a row of internal links at the top or bottom of the page that allows visitors to quickly navigate back to a previous section or the root page. Many breadcrumbs have the most general page (usually the root page) as the first, leftmost link and list the more specific sections out to the right. We recommend using breadcrumb structured data markup28 when showing breadcrumbs.
Write a description that would both inform and interest users if they saw your description meta tag as a snippet in a search result. While there's no minimal or maximal length for the text in a description meta tag, we recommend making sure that it's long enough to be fully shown in Search (note that users may see different sized snippets depending on how and where they search), and contains all the relevant information users would need to determine whether the page will be useful and relevant to them.

Not only are the tactics creative and unique, but you did an excellent job outlining each with step by step instructions, including great visuals, and providing concrete examples on how to implement the linking tactic. My favorite is probably the Flippa tactic. Amazing for pulling information on how other webmasters were able to acquire links, etc. Thanks again!

Black hat SEO attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception. One black hat technique uses hidden text, either as text colored similar to the background, in an invisible div, or positioned off screen. Another method gives a different page depending on whether the page is being requested by a human visitor or a search engine, a technique known as cloaking. Another category sometimes used is grey hat SEO. This is in between black hat and white hat approaches, where the methods employed avoid the site being penalized but do not act in producing the best content for users. Grey hat SEO is entirely focused on improving search engine rankings.