Those who dislike the Internet, sometimes complain about the lack of privacy. Basically, a person can be identified on the Internet by his IP address. Depending on your Internet provider, your IP address may be changing each time you connect to the Internet or it may remain static. Websites can track your IP and know that you already visited their website before. Whenever you visit a website, chances are that that website is going to leave some traces on your computer such as cookies. There are ways to disable cookies, but most people are not going to do it. It is nothing that should make you panic, but it is simply something to keep in mind when browsing the Internet.