Hi
There is already an option to exclude blog entries by category (great), but I also use hidden pages for certain use.
I know there's an Exclude Posts area under the settings screen, but it would be easier to have this as a checkbox in the post editing screen instead so you can hide it as you create it - especially if you add/remove hidden pages as frequently as I do.
To summarise the request: It would be really useful if there was a checkbox when you create a page or post that, when you uncheck, will exclude that specific page (and any children if present) from the generated sitemap.
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For Reference, WP to Twitter plugin does something similar. Excludes categories in the settings, but a checkbox in the post not to ping that page/post out to Twitter.
Hope that all makes sense
CallumW
http://wordpress.org/extend/plugins/google-sitemap-generator/