"If you build it, they will come" was a beautiful hook to a sentimental movie, but it’s a terrible approach to online marketing.
Yes, most businesses need a website that knows who its target audience is and provides useful content to that audience in clear language, easily navigated structure and attractive design. But you can have all that and still completely fail to get site visitors, readers and customers, because a lot of what makes your site successful happens outside your website itself.
