While it may seem that the speed of your website doesn’t matter much when you’ve on a fast internet connection, around 40% of the US still doesn’t have a broadband connection and mobile data rates can be quite bad, especially if you live in big cities.
You’re probably already aware that the load time of a web site became a ranking factor for Google some time ago (albeit a minor factor) . However, that’s not the only way a faster site can see better search engine rankings, gain more traffic and increase it’s income.