Anyone can post a profile and conduct profile search for free. Your profile will be available to all users. And you don't have to be rich or famous.
But If you are a celebrity, you can choose to use one-to-one premium service.
(If you earn $150,000 or above annually, you will be listed as a millionaire. This definition is used due to the fact that your chance of accumulating greater wealth or becoming wealthier is very high. You will be asked later to choose annual income level ranging from $150,000 to $100,000,000. You will join tens of thousands of them.)
You can start your search directly from this page.