I have a domain http://sub.example.com/.In it there is a wordpress blog at http://sub.example.com/blog and other more static content at http://sub.example.com/other, http://sub.example.com/stuff, etc, etcAs the blog content is updated quite often I use a WP sitemap plugin to generate it for the blog dynamically for convenience.  Is there any penalty/negatives in using this while also maintaining a separate one for the whole subdomain bar this blog at http://sub.example.com/sitemap.xml?
using multiple sitemaps in a domain
seo;google;domains;sitemap
Multiple sitemaps are perfectly fine. There's a special way to tell the search engines you have them. <?xml version=1.0 encoding=UTF-8?><sitemapindex xmlns=http://www.sitemaps.org/schemas/sitemap/0.9>   <sitemap>      <loc>http://www.example.com/sitemap1.xml.gz</loc>      <lastmod>2004-10-01T18:23:17+00:00</lastmod>   </sitemap>   <sitemap>      <loc>http://www.example.com/sitemap2.xml.gz</loc>      <lastmod>2005-01-01</lastmod>   </sitemap></sitemapindex>Just make sure you follow that specification and you're all set.