[Forum] Random necro-posts spawning in new topics

The following thread: http://eu.battle.net/wow/en/forum/topic/5168357142
is a thread like any other in the General section of the forums.
However, the first reply to that topic is one that was created 26/12/2010, and about recruiting people for a guild.

Ive seen another necro-post earlier today, in another thread. It doesnt seem to show up at this moment when I look into that same thread.

If these posts randomly appear and later, mysteriously, disappear, then something really creepy must be going on.

When I refresh the above thread, the reply-post I was talking about somehow disappeared! This really does seem like a case of phantom-posts...
Necro post: http://i.imgur.com/pfYUl.jpg
Necro post gone: http://i.imgur.com/P0RGd.jpg

http://eu.battle.net/wow/en/forum/topic/5168867032 shows the same issue. This random necro-post seems to last longer than the others:

FAIL (the browser should render some flash content, not this).

Cataclysm is a trademark, and World of Warcraft and Blizzard Entertainment are trademarks or registered trademarks of Blizzard Entertainment, Inc. in the U.S. and/or other countries.

This site is in no way associated with Blizzard Entertainment