That is the length of time you have to capture someone’s attention when they’re surfing the web. About 2-3 seconds. Quick, isn’t it? If what you do isn’t prominent – and clear – on your home page you may lose the opportunity for new business.
You have less than 5 seconds to capture a web visitor's attention before they decide whether to stay on your web page or move on to the next site. In that precious five seconds you have to show them exactly what you offer and why