I have some questions:
1: Do i have to create an account at
https://www.google.com/webmasters/sitemaps?
2: If yes, what should I enter as the site if my forum is located at
www.example.com/forum? (Should I enter
www.example.com or
www.example.com/forum)?
3: Would this be the correct sitemap location "www.example.com/forum/sitemap_index.xml.gz" even though Google wants you to place it in the highest level directory (which would be
www.exampl.com)?