Free registration of subdomains for wiki.com

From the CNET article "Commercial wiki sites are emerging, profit model still under exploration," I learned that entrepreneur John, known for purchasing domain names, acquired wiki.com for $2.86 million. He stated that he will allow users to register subdomains of wiki.com for free — for example, soccer.wiki.com, smokedsalmon.wiki.com — enabling users to attract advertisements or engage in e-commerce. I have just successfully registered chineseart.wiki.com. Below are some suggestions provided by wiki.com in their confirmation email...