CTR: 'Click' is the new currency
The good old 'advertising prices' have become pretty irrelevant on the Internet. Advertising is done with banners, and payment is based on the number of mouse clicks. The click-through rate (CTR) has thus become the new key figure in Internet marketing. If, for example, a page with an advertising banner is called up a hundred times and the banner is clicked once, then this 'click-through rate' is one percent. Which would be almost 'sensational', because the CTR figure is usually in the per mille range.
In e-mail marketing, slightly different ratios apply, because the click rate here is defined by the ratio of opened mail and clicks on the internal mail links (so-called 'net click rate').