As a site owner, your reputation means a lot. Visitors of your site have to trust you to provide reliable content and if you monetize the site, advertisers need to trust that they are paying for honest impressions. Being banned from an ad network for illegitimate traffic is a concern for most site owners. Fake traffic can increase the price of advertising and direct advertisers to other more trustworthy mediums. Click fraud on your own site might cost you revenue. Learn about it in the infographic below.
(Credit: WhoIsHostingThis?)