bionicbob,
It's fine to use the Superman symbol but, using it as an "icon" is a little confusing.
Check the link:
http://www.colonialfleets.com/forums...splay.php?f=60
When it appears like that, it leads the reader to think that the thread is about "Superman".
As an alternative, if you like, incorporate it into a "Signature". We've had several members do that.
BST