<p>Short answer: It's tracked by IP, so you can't just refresh and increase view counts.</p>

<p>Long answer: Read the Meta Stack Overflow topic here: <a href="http://meta.stackexchange.com/questions/36728/how-does-stack-overflow-calculate-the-number-of-views-in-a-question/36729#36729">How does Stack Overflow calculate the number of views in a question?</a> – it goes into much more detail.</p>