A Mobile Friendly Website Is a Necessity for website Optimization
A mobile friendly website is a necessity for website optimization because the majority of all searches are now being done on mobile devices. Mobile usage is only going to accelerate more and more so it’s best to jump on the bandwagon now. Thus you will be left behind if you do not get mobile friendly now.
Why Duplicate/Thin Content need to be corrected for SEO
Duplicate/thin content need to be corrected for SEO. Duplicate content occurs when the same exact content appears on more than one page on your website. Every page should be completely unique. From an SEO perspective, duplicate content is an internal issue and not an external issue. An external issue will be if someone took your content and placed it on another website. That will be a copyright issue.