Status of mangakas after the earthquake.

Urobuchi Gen is safe. http://twitter.com/Butch_Gen/status/46365741586460672
Mamoru Miyano is safe. http://twitter.com/mamo_info
Confirmed safe Seiyuus:Tanaka Rie, Kamiya Hiroshi, Morita, Tamura Yukari, Shimoda Asami, Emiri Kato, TOEI Staff, Aya Hirano, Daisuke Ono

Chinese+Japanese List of confirmed/unconfirmed/unaccounted for Mangakas and Seiyuus http://goodog.uueasy.com/read-htm-tid-30062.html

I only translate Chinese, you'll have to rely on ShiKage for the Jap translation, otherwise, use the Google Translator which is f'ucking retarded and always give you the wrong translation bad.

Also, good news is, Akira Toriyama(DBZ) and Kishimoto Masashi(Naruto) is alive.
Bad news is, quite a number of Seiyuus and Mangakas is found dead either from Tsunami or the Earthquake, I don't have that list of my hand, only think I know about this is that one of the Suzumiya Haruhi Seiyuu is dead.

Edit: List of confirmed alive Mangakas: http://news.deviantart.com/article/145825/

Everyone except Hanabira & Butterfyi will happy about this update.

Edit 2: Hiro Mashima creator of Fairy Tail is safe. It seems that he is doing artwork for a charity.