I have a problem though... you're making a sitemap gz for each forum, well, some of my forums are big:
Could you add spanning?
So we'd start with:
http://www.bowlie.com/forum/archive/sitemap_4_1.gz
And when we passed an arbitrary value (make it a setting in the file in case Google change it later) we would move onto:
http://www.bowlie.com/forum/archive/sitemap_4_2.gz
http://www.bowlie.com/forum/archive/sitemap_4_3.gz
through
http://www.bowlie.com/forum/archive/...p_4_9999999.gz
etc
As it stands, Google is now refusing to pay attention to my mine as the one that exceeds it basically causes the whole thing to error.