I received a message from Google some couple of hours ago about the new changes they made on Google Adsense. The new changes on affect Google Adsense for Domain feature that is available on all Google Adsense account. Google have reached a conclusion to retire its Adsense for Domain feature.
This simply implies that all websites parked with Google will no longer be served ads for viewers anymore and publishers using the Google Adsense for Domain will no longer be able to use the this service.
You can read the message sent to me by Google Adsense Team yourself below.
My final advice to those people using Google Adsense for Domain to park their unused domain name is to go for other alternatives like godaddy.com, sedo.com and the rest to park their unused domain name.