după diverse criterii
My main account on French Wikipedia: fr:Utilisateur:verdy_p
I may read Romanian with minimum efforts (just like I may read Portuguese, Italian, Occitan or Catanlan, but not Spanish without much more of efforts due to its too many exceptions), but I absolutely can't write it, sorry.
I know some of Latin, and also some of Breton (theoretically the regional language of my native region, but I never learnt it). I also learnt some Greek and may be able to read some of it.
But definitely, I can only contribute texts usefully in French, my native language, English at a near-native level, German moderately (which allows me to read some Dutch as well, the native language of my grand-father), and some Esperanto (because of its simple grammar and common roots with the llanguages listed above).
Well if you want to write Romanian using the Cyrillic alphabet (note that I'm not calling this "Moldovan"), I'll still be able to decipher it, because I'm passionated at scripts and multilinguism (I may also read some Hebrew phonetically with LOTS of efforts, but I really cannot decipher Arabic yet).
Don't speak to me using Han (or I'll need to Google it immediately as I don't even know how to sort it in a dictionnary) !
But if you have questions about internationalisations, Unicode, and related algorithms, or debugging some complex MediaWiki templates or building complex tables, I'm quite open to them and I'll be ready to help.
Have a nice day!