Certain Surfer is a term used to describe an individual who uses the internet to access information or services. It is a combination of the words 'CERTAIN' and 'surfer' which implies that the USER is knowledgeable and experienced in navigating the web. A CERTAIN Surfer is someone who is comfortable using the internet and knows how to find what they are looking for. The terms 'USER' and 'webuser' are often used interchangeably to refer to a CERTAIN Surfer. A USER is someone who uses a computer or other device to access the internet, while a webuser is someone who uses the internet to access websites or other online services.