Re: How to translate bbPress to another language
There’s a good overview of bbPress’ translation framework (with links to existing translations and to useful posts) on bbshowcase.org:
http://bbshowcase.org/forums/topic/bbpress-translation-internationalization-into-local-languages
According to that, bbPress uses the same translation approach as WordPress:
https://codex.wordpress.org/Translating_WordPress#gettext_files
The approach seems to be:
1) You download the POT file, which has all the English strings in it.
2) You translate the strings into your language (Greek) and save the file as a .po file
3) You optimize the .po file into a machine readable .mo file
Looks like you can get the bbPress POT file for whichever version you’re using here:
http://svn.automattic.com/bbpress-i18n/pot/tags/
Good luck!