Social media. The algorithms have truly changed since social media first emerged. Many content websites are community-oriented -- Digg began allowing users to vote which stories make the front page, and YouTube factors views and user ratings into their front page rankings. Therefore, e-commerce stores must establish a strong social media presence on sites like Facebook , Pinterest, Twitter, etc. These social media sites send search engines signals of influence and authority.
In the real world, its not so easy. For example, I have 2 niches where I’m trying to use your technique. By keywords, its Software for Moving and Free Moving Quotes. I have 2 websites that related to each of them, emoversoftware.com (emover-software.com as initial, they linked together) and RealMoving.com ( for latter keyword). So, to begin with, none of those niches has Wikipedia articles, so your first suggestion will not work. But, in general suggestions, you are advising to get backlinks (of authoritative sites of course). But check this out – my site emover-software.com has only 4(!) backlinks (https://openlinkprofiler.org/r/emover-software.com#.VXTaOs9VhBc) and, however, listed as #1 (or #2) by my keyword. (moving software, software for moving, software for moving company). RealMoving.com has more than 600 backlinks and is way back in ranks ( 170 and up) by my keyword. Even though those sites have different competition, its still makes no sense! It doesn’t seem like Google even cares about your backlinks at all! I also checked one of my competitor’s backlinks, its more than 12000, however, his rank by keyword related to moving quotes even worse than mine!.
In 1998, two graduate students at Stanford University, Larry Page and Sergey Brin, developed "Backrub", a search engine that relied on a mathematical algorithm to rate the prominence of web pages. The number calculated by the algorithm, PageRank, is a function of the quantity and strength of inbound links. PageRank estimates the likelihood that a given page will be reached by a web user who randomly surfs the web, and follows links from one page to another. In effect, this means that some links are stronger than others, as a higher PageRank page is more likely to be reached by the random web surfer.
You can confer some of your site's reputation to another site when your site links to it. Sometimes users can take advantage of this by adding links to their own site in your comment sections or message boards. Or sometimes you might mention a site in a negative way and don't want to confer any of your reputation upon it. For example, imagine that you're writing a blog post on the topic of comment spamming and you want to call out a site that recently comment spammed your blog. You want to warn others of the site, so you include the link to it in your content; however, you certainly don't want to give the site some of your reputation from your link. This would be a good time to use nofollow.
Expertise and authoritativeness of a site increases its quality. Be sure that content on your site is created or edited by people with expertise in the topic. For example, providing expert or experienced sources can help users understand articles’ expertise. Representing well-established consensus in pages on scientific topics is a good practice if such consensus exists.
Google has recently changed how you can use the Google Keyword Planner. Before, everyone who signed up could see the search volume for keywords. Now, it only shows estimates. There is a way to get around this. You need to create a Google Adwords campaign. The amount you spend doesn’t matter. After you do that, you will regain access to the search volume.
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.
Search engines may penalize sites they discover using black or grey hat methods, either by reducing their rankings or eliminating their listings from their databases altogether. Such penalties can be applied either automatically by the search engines' algorithms, or by a manual site review. One example was the February 2006 Google removal of both BMW Germany and Ricoh Germany for use of deceptive practices. Both companies, however, quickly apologized, fixed the offending pages, and were restored to Google's search engine results page.
Guest blogging is a two-way street. In addition to posting content to other blogs, invite people in your niche to blog on your own site. They’re likely to share and link to their guest article, which could bring new readers to your site. Just be sure that you only post high-quality, original content without spammy links, because Google is cracking way down on low-quality guest blogging.
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.