Google's head of web search spam team Matt Cutts has released a Google Webmaster help video in which he points out if there is any downside for SEO of a responsive website.

In a question asked by a webmaster in Google's Webmaster help center asking if there is a downside for SEO of a responsive website, Matt clearly lined out that there is nothing to worry about a responsive website's SEO as far as you have implement google's guidelines pertaining to responsive web design or mobile web design.

You can watch him answering the question in the Google Webmaster help video below.