For the German translation of plugins and themes I generally use a plugin called Codestyling Localization. In most of the cases it works perfect, but some plugins are not detected (Like Easy Blogging and Ultimate Facebook).
The author gave the following reason:
Hint: Because sometimes the question appears, that plugins or themes doesn’t get detected as translatable, this often caused be the fact, that they use variables as textdomain specifier. If the author would have been using constants, the parser would be able to find them.
Unfortunately I don't know what to do with this information and the author is not reachable at the moment. Can anybody help in this forum? It would make my life so much easier!!
Thanks & Bests