Is a mock website a waste of time for a domainer?

I stumbled across this site: www.pink.com (not mine)

At first it looks like a developed website but upon further inspection it's nothing more than a website full of ads trying to look like a developed website.

Rick Schwartz had blogged about this and called it a complete waste of time. He said that unless your website generates an income a domain investor should not be implementing that type of scenario.