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.
#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.
Hey Ted, thanks for the great questions! The peak times refer to your particular time zone, if you are targeting an audience that resides in the same zone as you. You can also use tools to find out when most of your audience is online. For example, Facebook has this built into their Page Insights. For Twitter, you can use https://followerwonk.com/. Many social posting tools also offer this functionality.