Starbucking !!

Starbucks Chairman Howard Schultz sent an email to CEO Jim Donald and other top executives on Valentine's day. You can read the whole text here. There are a ton of blogs & newspaper stories on Internet about the subject. My question here is not about the Starbucks' strategy but about the memo itself. Do you think Howard did the right thing by sending this email? Could he make a similar or stronger impact by any other mode? Is there a need for new communication startegies when you're not confident that internal memos will remain 'internal'? (or can we write an internal memo keeping in mind that it won't remain internal?)