My guess is that the pictures are treated as attachments and as such, they are not permitted according to the statement on the group's homepage.? "Attachments are not permitted."? Consequently, they are replaced in the body of the msg by placeholder tags [image#.jpeg].?
I have looked at the "Photos" section of the group.? Some of the photos, without caption (or description), are not very useful.? For someone who comes after the pertinent discussion when the photos were uploaded, I have no clue what I would be looking at sometimes.??
