The generator that is doing this is located here:

http://lfw.org/jminc/

I have been unable to find any instance of this in posts. It may be on a different server, or it may be constrainted within someone's signature. Whatever the case may be, this problem is not a virus or anything of that sort. The "huh" thing is obviously a similar sort of page, although I have not been able to find it online.

EDIT: On second thought, I think this may be the doing of an administrator. In fact, I am nearly certain.

~ Traft