Content duplication is not only the weak side of joomla CMS but also of almost every CMS that are in the industry. Although, CMS automatically doesn’t create the copy unless we miss configure the options, the content duplication problem is far common.
Joomla, although being one of the widely accepted CMS and popular for its functionality and customization, it needs extra work around to make it fully search engine friendly. Almost all CMSs claims to be SEO friendly, by default they’re not, however they can provide easy options for adhering search
Begining 21st of April 2015, Google has changed its search algorithm to check for mobile responsiveness of the websites that show up in mobile search results and accordingly award points and improved ranking for such. Huh! Having a mobile responsive website is no more a luxury - it has become a necessasity.