I am writting a site map for Google with the notepad with this format:
<?xml version="1.0" encoding="UTF-8"?>
< urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
< url>
< loc>http://www.example.com/</loc>
</url>
</urlset>
I would to know if is there any place online, where I can create the sitemap?

If your site is dynamic making a sitemap that updates itself is very handy. I have a site with articles, blog, and forums and I never have to update my sitemap because new pages are automatically added dynamically.

If your site is dynamic making a sitemap that updates itself is very handy. I have a site with articles, blog, and forums and I never have to update my sitemap because new pages are automatically added dynamically.

I always send site map to google when I create news URLS
Could you explain me, how can I automatically added dynamically new pages?

A sitemap can be generated by PHP or any server-side language. If your conten6t is in database you just have to pull it out and create the XML dynamically. A few lines of PHP can add thousands of pages to a sitemap. Then every time new content is added to your database it automatically is added to your sitemap.

You don't need to be manually resubmitting a sitemap either. Google automatically checks your sitemap file multiple times daily.

A sitemap can be generated by PHP or any server-side language. If your conten6t is in database you just have to pull it out and create the XML dynamically. A few lines of PHP can add thousands of pages to a sitemap. Then every time new content is added to your database it automatically is added to your sitemap.

I'm going to create a sitema by Asp.
Thanks for your help

You may want to consult the author of the plug-in as they will know much better then we will as they know their code and we don't.