3. no one read the post, for whatever reason ... may have many quite different causes, such as some unusual activity (much more posts nearly simultaneously pub

3. no one read the post, for whatever reason ... may have many quite different causes, such as some unusual activity (much more posts nearly simultaneously published, also "for various reasons"), bug, shadow banning... https://en.wikipedia.org/wiki/Shadow_banning https://en.wikipedia.org/wiki/Shadow_banning