Posts between two wordpress blogs.

Hello,

I am currently running multiple projects, where of each of these project has their own individual wordpress installation with many different categories containing updates and other bloging information.

I also have a “main” blog, a blog for all blogs (projects), and this blog contains different categories for updates under each project.

What i want to do is, when i post a post to a spesific category in one of the project blogs, then it will at the same time be posted on the main blog in a spesific category, i don’t want the posts to be links or anything on the main blog, but actually posted. Would be nice if the comments where shared tho 😛

Anyone got an idea?

Thanks,