Sedo is one of the biggest names and marketplace when it comes to domain parking and exposing your domain to hundreds of thousands of prospective buyers who are looking for a domain name similar to yours. Chances are, you may make some good sales for the domain name you registered few days/months back. Besides, if the domain does not sell, there is always an ad revenue pouring in, which is very less, but ultimately add up to give a good sum of money. For a new domain registration receiving some traffic, I think the revenue would add up to atleast pay the price of the domain back. The profit is whatever you sell the domain for. I have had a great experience with Sedo Highly recommended resource for Domainers!!