Sitemap.xml parameters

[JohnHuynh]

Hello,

I confused about the parameters when create sitemap.xml. I don'n know how to use these parameters efficiently. Some parameters are: 
- **Page changing frequency: **what is a good value? Can I choose "None"?
- **Last modified date: **what is a good value? Can I choose "Don’t specify"?
- **Page priority: **what is a good value? Can I choose "Don’t specify"?

Thanks,

[JohnHuynh]

Thank you !

I also found a good tool for creating sitemap: http://www.web-site-map.com/xml_sitemap.php

[FedeEinhorn]

There are some tools that can build the sitemap automatically setting all those values, like <cite>www.xml-sitemaps.com</cite>

But, the best answer would be to use:

• Page caching frequency: How many times your pages' content change?
• Last modified: return the actual file last modification date (dynamic? do that using the DB last update date).
• Priority: Set the priority to 1 to your most important pages and then start lower it for the others (less important, less priority).

Again, xml-sitemaps can handle almost everything (the standalone version (paid)).

Hope that helps.