If you want to send a donation for the Sichuan earthquake victims, you can send it through the Chinese redcross. Bank account below:
Account name: Red Cross Society of China
开户单位:中国红十字会总会
人民币开户行: 中国工商银行 北京分行东四南支行 (ICBC Beijing Branch)
人民币账号: 0200001009014413252
If you are sending foreign currency (from abroad), you should use instead the following account:
外币开户行:中信银行酒仙桥支行
外币账号: 7112111482600000209
Another way to donate, if you are in China, is to send X (X being a number) by sms to 1069999301 if you are a China Mobile, China Unicom, China Telecom or China Netcom mobile telephony user. X yuans will then be deducted from your prepaid account and sent to the red cross. (for instance if you send 10 to the number 1069999301 from your mobile phone, it means you have donated 10 yuans).
Online donations can be done through
www.redcross.org.cn, though website seems down for the moment (too many connections?)
If you find links to alternative organizations please post it as reply to this thread.