Update 4/12 Adsense for Domains has been discontinued.
Came across a long thread on a Google forum today which led me to believe that for some, this isn’t as obvious as I might have thought…
Adsense for Domains is used to monetize Type-In traffic, ie. people type your domain name into the Browser Bar and hit Return. That’s it! If you register a domain and discover it’s getting lots of traffic, it’s probably because you stumbled on (not likely now with so many generic keyword domains already registered) a phrase that a lot of people are looking for-so many that the tiny percentage of people who type the phrase into their Browser Address Bar amount to significant traffic. If you’re not getting hits/clicks on your Adsense for Domains domains it means you probably have an average domain name. Not meaning it’s a bad domain name, but it’s probably not a generic term that people are searching for. For example, you would be wasting your time entirely trying to monetize a domain (using AFD) like Figgs.com. OTOH you MAY earn a buck or two a month with a domain like usedfashionwigs.com Mostly I think Adsense for Domains is for ‘Domainers’ who, due to fortuitous timing and insight, picked up a lot of generic search term domain names early on. Rather than ‘park’ their domains at places like Sedo, Park, etc etc. they now have the option of parking with Google directly.
[Update 122209 Answered a question on another site]
The Google Adsense For Domains instructions are pretty good.
Problem is, you don’t know if they’re going to accept your domain before you submit it and go through the entire hassle of changing your A records etc. And while the directions for setting it up are pretty good, there are no directions informing you how to change back. So keep good notes. I would recommend taking a screen shot of the settings before you make any changes. You might only discover that Adsense for Domains isn’t working for you a few months from now and have completely forgotten how the settings look. Ask me how I know 😉
There should be an easier way to submit domains for consideration BEFORE you go through the whole A record hassle. For instance, two of the 5 domains I initially submitted were declined by Google. 2 others did worse than when parked. One did a little bit better.