I "shared" the post about today's tax march. Facebook offered the option of sending it as a message, so I sent it as a blast to a lot of people in Anchorage that I thought would be interested. Rather than hurt my feelings by telling me that I wasn't authorized to send the attachment from the original post, Facebook sent it, then wouldn't let the recipients open it. So, instead of being embarrassed by myself about not being authorized I can be embarrassed with 20 other people at once. This is how Facebook builds community.