have not been promising. barbara, thank ou have not been promising. barbara, thank you very _ have not been promising. barbara, thank you very much _ have not been promising. barbara, thank you very much indeed. - have not been promising. barbara, thank you very much indeed. we . have not been promising. barbara, - thank you very much indeed. we heard earlier about facebook�*s outage issues. in a completely separate development, a former facebook employee has accused the company of prioritising... she left earlier this year and prioritising... she left earlier this yearand in prioritising... she left earlier this year and in an interview with 60 minutes, she confirmed she was the source of a series of anonymous leaks published in the wall street journal. they've been dubbed the facebook files. here's some of what francis told 60 minutes. you facebook files. here's some of what francis told 60 minutes.— facebook files. here's some of what francis told 60 minutes. you may see onl 100 francis told 60 minutes. you may see only 100 pieces _ francis told 60 minutes. you may see only 100 pieces of— francis told 60 minutes. you may see only 100 pieces of content. _ francis told 60 minutes. you may see only 100 pieces of content. facebook| only 100 pieces of content. facebook has thousands of options. how it is picking out that content is it is optimising for content that gets engagement. but its own research is