Hm, this post is only 2 hours old and is already 14th on the front page despite having 600+ points. Do all local posts disappear so fast from the front page, or

Hm, this post is only 2 hours old and is already 14th on the front page despite having 600+ points. Do all local posts disappear so fast from the front page, or is this one treated specially? Or maybe its upvote/downvote ratio is low?