Each Domain Parking and Monetization System has it's own strengths and weaknesses.
Essentially, you park a Domain on someone's server and then it is configured to show PPC ads. (PPC = Pay Per Click. When an add is shown, if a user clicks on it, it is recorded and the
The GoldKey program is really great at general things because of it's Overture PPC listings, but is also extremely limited in that exact same way (same weaknesses). The Domain Sponsor program seems to excel at financial and insurance names. Domain Sponsor has recently been aquired by Revenue.net. Fabulous seems to excel at Poker, Gambling and Adult oriented listings, though it is often the best at many others as well. Unfortunately, Fabulous requires that you have at least 100 strong type-in domains accepted in order to start parking with their program. I haven't tried out TrafficZ out yet, but that one is supposed to be getting good.
I'm still not sure about who is best at certain things.
I have also tried out Domain Hop and Domain Spa. Domain Hop is easy to setup and pays really well as long as you have family oriented traffic, but I think there are too many pop-ups. Domain Hop is a Kanoodle company and though the Kanoodle PPC Directory is kinda small, it is very good, the third largest PPC engine (after Google Ad Sense and Overture PPC Directory). With Domain Spa, every page can be a pop-up. So I think these two are just way too spammy, but often work out well with high traffic Domains.
Some of the aftermarket premium domain sales houses also offer parking, but your share of the PPC is smaller. Still, Sedo has great results with international traffic domains and is your second choice for parking Poker Domains. Sedo actually has Google as a parking partner, somehow, which is unusual. Afternic offers parking through the house parking system, through a lesser Fabulous parking program, or through Domain Sponsor, simply by chosing your prefered method on site. The nice feature about Afternic is their Affiliate program.
LINKS: GoldKey Domain Sponsor Fabulous DomainHop DomainSpa Sedo Afternic
Hope that helps!
remember that you really need TYPE-IN domains in order to succeed in Domain Name Parking Programs because the search engines don't like these sorts of pages (since they are just showing PPC ads).
If you have good Domains that are not type-ins, you should actually build mini-sites and show content with complimenting ads on them. This way, you can build-up links and promote such sites. Often, showing Google, Yahoo or Bright Ads will make you even more PPC listing revenue.
But actually, mini-sites require a whole new approach, so they are really a whole 'nother topic.
By the way, don't think that you can sit there and click on your own ads, or write a script to do it... most all of these places are excellent at catching click fraud. Then you wind-up losing big time.
Some Domainers can actually make a living with PPC. Afterall, if you have 4,000 Domains making $4.00 per month EACH, you can be making some GREAT money. But to be sure, start small. The learning process takes quite a while. And you have to choose wisely as not any old domain will do. And keep in touch in the Domainer Forums!
Good Luck! -Doug