emacs-w3m(){ emacsclient -e "(w3m \"$@\")";}

[jidanni@xxxxxxxxxxx]

Gentlemen, place in your .bashrc files
    emacs-w3m(){ emacsclient -e "(w3m \"$@\")";}
and enjoy
$ emacs-w3m URL
right from the shell command line. Perhaps mention this in the manual.
(You will get warned if you try more than one URL at a time.)