Supreme Court Strikes Down S. 66A of the Information Technology Act, 2000

In a landmark judgment delivered on March 24, 2015 the Supreme Court struck down section 66(a) of the IT Act holding that the same infringed on the rights of free speech protected by our Constitution. Newsclick discusses the judgment and its implications with Rishab Bailey, Director Legal, Society for Knowledge Commons. Why did the Supreme Court decide to strike down Section 66A and what does this mean for the common man? Why exactly is this judgment considered so important and more specifically does it mean you cannot be arrested for posting content on the Internet?