If you are using Responsive Web Design, use meta name="viewport" tag to tell the browser how to adjust the content. If you use Dynamic Serving, use the Vary HTTP header to signal your changes depending on the user-agent. If you are using separate URLs, signal the relationship between two URLs by tag with rel="canonical" and rel="alternate" elements.
If your social media profiles contain a link to your website, then you’ve turned your engagement into another channel for website traffic. Just be sure to engage moderately and in a sincere way, and avoid including links to your website in your comments—lest you appear spammy and hurt your online and business reputation. Increased traffic should not be the goal of your engagement, but rather a secondary result.
Thank you so much for these great SEO techniques you posted on your blog. I also follow you on your youtube and listened to almost all of your videos and sometimes I re-listen just to refresh my mind. Because of your techniques, we managed to bring our website to the first pages within a month. Adding external links was something I never imagined that it would work. But it seems like it is working. Anyway, please accept my personal thank you for coming up with and sharing these techniques. I look forward to your new blog posts and youtube videos!