Ok, I am not sure what happened. I was bored and searched for: "mouth_shot -fangs" and added the tag fangs to many posts where it was missing.
Later when I looked up my post edits, I had to notice there are plenty of tags removed "by me". But I actually just removed some that really didn't fit into the scene.
I have used the mass editing tool for many of them. Maybe its a bug caused by it.
And it is showing, I've removed some links and added them back. At the same moment. I've never clicked into the source area.
I apologise for it. It wasn't on purpose. And I'll fix it tomorrow after I've had some sleep ._.'