When you say pageviews- what exactly do you mean?
If you're using JavaScript on your site, we charge you based on the number of times any page with the Ethnio code loads. There are other ways to measure traffic, such as unique visitors, but page views are pretty close to "every time someone loads your page." That means if someone refreshes the page, that's another view. This is the closest approximation of how often the code hits our server, which happens every time the page loads.
Otherwise, if you're not implementing any code, we charge based on the number of views or responses you receive. You might be asking yourself: why on earth do I have to pay for traffic to Ethnio even when a study is turned off? Click here to read more on that.