the running version is shown in the admin section. This should be enough. Displaying the version public made it easy to find the propper boards using google. If you dont show the version you must try more board if you test a exploit.
Ok, its not a big thing.
Wordlet: As you see I only take the powered by. The rest is in the footer hardcode. The powered by string is also used for the browser top line while wathing the portal. This gives me the option in different languages to translate the powered by string without touching the UBBthreads™ and the link.