Customers now simply assume you have a website and expect to be able to find out about your business, products and services at a time to suit them.  If you don't have a website you will almost certainly be missing out on potential new custom and could even be losing customers to competitors who have a sit.

A website is accessible 24/7 which means customers can visit at a time that is suitable to them and can lead to extra business.  Many ecommerce customers receive orders throughout the night, orders they may have lost to competitors had they not had a website.

A website can be updated at any time unlike printed flyers and brochures.

A well designed website can create a positive perception of your business and is a great way of instilling confidence and looking bigger than you actually are.

Customers can download all manner of information from your website and receive immediately, saving you money on postage, print and time.

It's likely that your competitors will almost certainly already have a website up and running.  As discussed earlier many people now search for local businesses on search engines like Google, rather than use Yellow Pages.  They'll never find you if you're not on there but they will find your competition.

If you don't currently have a website you could be losing business right now!