Hi, BHW. I'm new here but not new in spamming. I have been posting to groups since 2008 and had many experience, but now is happening something I have never seen. There is no restrictions while posting in Facebook groups but Facebook deletes my posts. I have confirmed that they are not admins or moderators but Facebook itself. For example I post to 10 Facebook group. I watch my activity log and after some time, on refresh all posted posts are deleted and when I post the same URL in same groups with same account it says "Attachment Unavailable". If I post different URL in same groups with same account it happens again. Any experiences about that?