There has been issues with the Joomla automated tag cloud module I created for people with foreign characters in Scandinavia/Asia etc etc. I have worked with a good friend on IRC who goes by rvsjoen (yes you can bother him if it doesn't work!) :p Anyway we've produced a fix (finally) and hopefully no more dissapearing multibyte characters.
I've also added the module class suffix under advanced parameters under request. Any requests for extensions to be added will be considered but not necessarily granted as I don't want to have a huge swathe of options for the users in the admin panel. This tag cloud module has been built to keep the operation simple after all!