The blocking of website advertisements, typically the image in graphical web advertisements. This enables the user to filter out ads while surfing websites. Ad blocking is used by a relatively small percentage of the online population. Ad filtering technology is increasingly bundled into other web applications. Those who favour ad blocking say it improves the speed and convenience of the website to visitors, making it less of a nuisance. Those who oppose it say that it deprives website owners of revenue from advertising, as ad-free surfers use valuable resources without indirectly ‘paying’ in the form of viewing ads, forcing content owners to consider charging.