This site offers an easy way to create your own virtual flashcard to study anything. You can also use other users' cards or share your own to help students. It supports many non-European typing scripts, like simplified Chinese and Japanese to help learn languages.
http://ictmagic.wikispaces.com/ICT+%26+Web+Tools
Some wordles I have created to revise vocabulary in French & Japanese. Unfortunately the flash doesn't work with Japanese script & so I have written these with English letters (roomaji) or in English.