Common mistakes in the development of the site, blocking the "good" SEO

For the site owners and online business owners the situation is very familiar, when the SEO-optimization is needed for your business promotion. And then there are problems, which can be solved with the help of considerable financial investment or time, which is not enough. What to do if there is no money nor desire to rewrite the site or substitute the inconceivable and numerous props?

A mobile version of a site is present - Google will provide you in the SERP

As it was previously mentioned by the Google representatives, this search engine will continue to use information about the presence of a site version for mobile devices, as a signal to rank the sites in search results.  

What is contained within the body is very important to Google

Matt Cutts as always focuses on quality site content, not avoiding the subject in the last video message.