I agree, We don't need an exact duplication all of the content. However, linking to other content is mandatory.
E.g. sporadic posts about various perl news sites are a perfect way to share content and links to interesting sites. As this discussion, it provides users a possibility to discover new things.
To answer your question: I consider sporadic posts at the posts section.
). Maybe something like this / there. It's a cool thing. (NB: I'm aware of the problem with time & money.)