In case you ever wondered where in Libya Berber languages are spoken, check out this map at Tawalt. Note at least two oases that don't get any mention in the Ethnologue - Ubari and al-Fogaha.
I was talking to a guy from Laghouat the other day, and it turns out that in that area people say `ma عما rather than more widespread Maghreb Arabic m`a معا for "with". This is rather interesting, in the light of Aramaic `am and Hebrew `im... wonder whether it's a coincidence, or a Syriac borrowing somehow picked up by an Arab tribe en route to Algeria? Anyone heard of another Arabic dialect where this happens?