Because some of these identifiers are persistent across the Internet, ads may be customized based on interests generated from a user’s visits to different websites via the same browser or device. This type of customization – or targeting – is often referred to as “online behavioral advertising” or “interest-based advertising.”</p> <p>Interest-based advertising means that publishers and advertisers share some level of personal information about users, which helps companies like TRUSTX better match a relevant advertisement with the user.