Comment 107 for bug 595265

Another data point or two regarding the bug:

Success running version 2.31.92 after removing Gwibber permissions in Facebook (see #106) and authorizing in Gwibber using just my username rather than my email address (see #19). The first change resulted in presentation of the full authorization dialogue from Facebook (login credentials followed by verification of permissions), the second change was required to actually make the 'add' button appear.