Awjila Berber is a highly endangered Berber variety spoken in eastern Libya. The minimal material available on it reveals that the language is in some respects very archaic and in others grammatically unique, and as such is of particular comparative and historical interest. Fieldwork has been impossible for decades due to the political situation. Recently, however, several inhabitants of Awjila have set up a Facebook group Ašal=ənnax (“our village”), posting largely in Awjili. Analysis of this partly conversational corpus makes it (...) possible to extend our knowledge of the language, yielding unattested words and constructions. Examination of its grammatical features also reveals that these posters’ usage is heavily influenced by Arabic, showing language attrition absent from earlier data; even subject-verb agreement has been extensively reworked. In both respects, this study casts light upon the uses and limits of social media as a source of linguistic material. (shrink)