To whom it may concern:
Blah, blah, blah.............
Sincerely,
BrandEnforcement@rosettastone.com
Rosetta Stone Ltd.
Appropriate response.............
Regards,
Franklin Veaux
It's hard to take the Rosetta people seriously when they neither take the time to use simple business correspondence courtesy and find out who they're contacting nor provide a name of someone to whom you can respond.
Bouncing it in Apple's direction should give them pause.