SEOPTI - 5:44 pm on Mar 3, 2008 (gmt 0)

You really don't need a sitemap even if you have 1M URLs, you just need a good information structure. Google will find all URLs if PR and information structure are fine.

I'm not sure why people are still using sitemaps. If you need a sitemap for your visitors just offer a site search, I think people will not read all your sitemap links, using a site search is better in this case.

[edited by: SEOPTI at 5:48 pm (utc) on Mar. 3, 2008]