What is domain parking? Domain parking lets you easily park your domain and earn money. No hassles with web hosting or content creation. For many years domain parking was a relatively lucrative way to monetize domains that were for sale or were otherwise unused. This approach still works well in select cases. If you have a domain that gets good targeted traffic, then Sedo still works well to monetize that traffic in many cases. Uniregistry's marketing platform (formerly Domain Name Sales) also does a good job. There are other companies around, but they don't do quite as well for me, and in some cases I've actually seen them attempt to put malware on my system.
I will continue to update the NameMonetizer blog from time-to-time with some of the latest information on monetizing domains. The links out to other sites from this page are affiliate links, but these companies do not pay any affiliate fees for their parking services. (They probably don't make enough money to justify this at this point.) Uniregistry and Sedo are both full-service domain companies that will also sell you domains and will allow you to sell your domains through them. I continue to make money selling domains through both platforms.