got a response from itunes customer service...
"Thank you for your interest in iTunes Ping. As an iTunes Store Content Partner, you can contact your label representative to discuss this opportunity. If you do not know who your label representative is, please log into iTunes Connect and select the "Contact Us" link on the lower right hand side of the page. The iTunes Connect address is:
http://itunesconnect.apple.com/
I hope this information proves helpful in resolving the problem. If you have any further questions, please reply to this email and I'll be happy to assist you. Have A Awesome Day!"
... which wasn't really a solution at all, but perhaps a clue that it'll have to be organized by the digital distributor that each artist uses to set up an artist page. lame... but i guess that would solve the potential claiming everyone's artist name issue.
- ryan