indyank - 4:52 pm on Mar 17, 2011 (gmt 0) [edited by: indyank at 4:53 pm (utc) on Mar 17, 2011]
Tom-cash, tedster had posted a link to a google page. Do you need any other confirmation? ;)
sitemap index file is the only way to handle sitemaps for large sites. Google suggests 50K urls per sitemap.
[edited by: indyank at 4:53 pm (utc) on Mar 17, 2011]