Great post, your knowledge and innovative approach never fails to amaze me! This is certainly the first time I’ve heard someone suggest the Wikipedia dead link technique. It’s great that you’re getting people to think outside of the box. Pages like reddit are great for getting keywords and can also be used for link building although this can be difficult to get right. Even if you don’t succeed at using it to link build it’s still a really valuable platform for getting useful information. Thanks!
Backlinks. If content is king, then backlinks are queen. Remember, it's not about which site has the most links, but who has the most quality links pointing back to their website. Build backlinks by submitting monthly or bi-monthly press releases on any exciting company, and contacting popular blogs in your niche to see how you can work together to get a backlink from their website. Create the best possible product site you can, so people talking about the products you sell will link back. Try creating graphics or newsworthy content that will influence bloggers and news websites to link that content.
The days when internet browsing was done exclusively on desktop PCs are long gone. Today, more people than ever before are using mobile devices to access the web, and if you force your visitors to pinch and scroll their way around your site, you’re basically telling them to go elsewhere. Ensure that your website is accessible and comfortably viewable across a range of devices, including smaller smartphones.
#16 is interesting because no one really knows about it. Myself and a former colleagu did a test on it about 4 years ago and published our results which conculded what you are saying. Since then I’ve been careful to follow this rule. The only issue is that often times using the exact kw does not “work” for navigation anchor texts. But with a little CSS trickery one can get the code for the nav bar to be lower in the code, prioritizing contextual links. I’ve also seen sites add links to 3-5 specific and important internal pages with keyword rich anchor texts, at the very top of the page in order to get those important internal links to be indexed first.