I am not sure, that i would like to see long signatures at the end of each forums posting. How about linking the automatically inserted user name at the end of a posting to the members community page,
https://openacs.org/shared/community-member?user%5fid=7797and provide more content there (e.g. as well the forum posting of the member). More postings will give the member page more google weight, which will also help a company hompage mentioned there as well...
