Xpost allows you to crosspost your posts to other WordPress blogs and to Community Server.
The Xpost (speak it: crosspost) plugin allows you to crosspost your posts to other WordPress blogs or Community Server blogs via XML-RPC. Features include:
Please note that you have to install Xpost on all blogs you want to crosspost comments to. You have also to activate posting via XML-RPC in all these blogs.
Once you approve a comment in any of the blogs which are selected for crossposting comments it will be posted to all of these blogs. It will be immediatly approved in all these blogs.
Please note that the support for crossposting to Community Server blogs is untested and may not include all of the features.