This infographic from Zing! Broadband shows the importance of website speed when it comes to conversion. In 2012, people spent $59.1 billion during the Black Friday weekend and the Cyber Monday sales brought in $1.62 billion. 167 million US consumers shopped online or 53% of the population. Estimated growth is 192 million by 2016.
Average page load time for the top 200 retail sites was 10 seconds, 10% faster than 2011.