Not being in the Google index is not really an option for me. I'm just a bit put off by the large amount of useless traffic since nothing has changed.
I want to be found by Google, and I think miniBB forum is very search friendly for Google, btw.
I checked my forum, and found there is a bottom line on every page that is changing with every reload. Possible Contents are:
"Powered by bulletin board script miniBB® © 2001-2008"
"Powered by online community software miniBB® © 2001-2008"
"Powered by light forum script miniBB® © 2001-2008"
Random content like this can make GoogleBot believe that the pages are really changing, and it tries to keep its index up to date by checking them as often as stuff is changing. Since stuff is changing on nearly every reload Google keeps upping its crawl speed to match the change speed.
Googles Webmaster Tools even opt me to allow even higher crawling speeds since my site is changing so much. This is marvellous for a high-traffic website, but not for a site with few changes.
I can't be sure this is the cause of GoogleBots high traffic, it is just the first thing I noticed that might have this effect.
It might even have nothing to do with MiniBB, since I added some other stuff to this website lately, I gotta check the logs some more to be sure where exactly Googlebot is looking for changes.
Thanks so far,