Feedwordpress is a plugin for wordpress. Just install it, and it syndicated it to any rss feed that you give it, and with the options that you set, it either publishes the new articles in the feed, drafts it or keepts it unpublished for your review.

It is supposed to be very helpful for bloggers who work with free article sites, but unfortunately, sploggers make the best out of it by stealing content from legitimate and non free blogs and driving traffic for themselves thereby dividing the traffic of the original post author.

Still, it is a good plugin, and I have that installed on one of my multi user blogs.