Hi

Use this address:

Hayden Panettiere
The Whaleman Foundation
P.O. Box 1670
Lahaina, HI 96767
USA

You can also try: http://whaleman.org/contact

or: https://twitter.com/haydenpanettier

or:

Hayden Panettiere
Brookside Artist Management
250 West 57th Street
Suite 2303
New York, NY 10107
USA

Fanmail

Are these still good?

Also, if I want to write a fanletter just to her, not related to Nashville, can I still the address below?
Which one has the highest chance of success?

Hayden Panettiere
"Nashville - Season 1"
P.O. Box 3000
Neenah, WI 54957
USA

Hayden Panettiere
William Morris Agency NY
1325 Avenue of the Americas
Bsmt 2
New York, NY 10019-6047
USA

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On an unrelated note, what does "If you just want to mail a letter with the address above, and do not want anything back, then you can stop reading!" mean? Does it mean "don't bother, won't work", or does it mean "that's the way to do it, go ahead"?

Thanks!