Websites are more than 'design' in today's world they are your main marketing & sales tool.
Most web designers still look at a website as just a creative task, missing the fact that your website is your first introduction to your potential customers, and so also your first opportunity.
If you are asked “how many visitors did you have on your site last month?” you might proudly say 3000, 5000 or more. So if you are then asked “ok, can you tell me the name of 5 of them?”, could you answer?
People come to your site because they are interested in your product/service, yet the opportunity to find out who is visiting your site is missed by focusing on just design, rather than marketing. Just think… if you had the contact details of those