One sitemap can cover multiple sites - kinda cool.

[Sgt_Kickaxe]

Is this new? I was checking the status of my sitemaps in webmaster tools and found a page that says I can submit one sitemap, from anywhere, that cover links to pages on all of my sites if those sites are verified inside GWT.

One sitemap to rule them all: [google.com...]

I can see several benefits for this including having only one file to edit. Do other search engines support the use of a single sitemap for multiple sites ?

[goodroi]

Been around for a while. Since I'm paranoid I prefer not to mix my network of sites together.

[Sgt_Kickaxe]

I never felt an urge to do this so never looked to see if it was possible, but since I don't see any documentation on it from "the other" search engines it would be a bad idea to implement I guess.

[goodroi]

it is usually best to keep things as simple as possible to have maximum search engine crawling. the bots are getting smarter every day but there are still many, many issues that can cause your website not to be indexed.

its not always possible to avoid the more fancy techniques but simple does equal less headaches.