Question: How do I find out if Google or Bing is using my sitemap?
Answer: To get more detailed information about your sitemap file’s usage you’ll need to create an account with each search engine provider. First, upload your newly created sitemap to your server, and then create an account with either Google or Microsoft.
To create your Google Webmaster Tools account, visit: http://www.google.com/webmasters/
To create your Bing Webmaster Tools account, visit: http://www.bing.com/toolbox/webmaster/