You have two ways of showing your support of Azureus by donating money:

• Paypal: enables you to donate by entering your credit card number.
• Moneybookers (MB): enables you to donate directly from your bank account.
  You first have to create an account with them and wire money from your bank account to your MB account (it's free). Then make a transfer from your MB account to the Azureus MB account (olivier at gudy dot org) (also free of charge).