Reblog posts accross the network, Share a post link from a blog to another blog on the same WP multisite network and include the post content !

acegiak

WhisperFollow

Use your wordpress blog to aggregate and reblog all friends and sites from across the web.

dpoakaspine

Reblog: redirect new to old

Reblog posts: create a new post and redirect to an old one

Bastien Ho

NOUS Open Usefull &amp; Simple

Europe Ecologie Les Verts

N4thaniel

The plugin allows webmasters to suggest interesting posts on the network. Suggested posts will appear in a dashboard widget. 
Any page or posts can be shared by clicking on the share button in the toolbar. Un new window (press-this) will be opened to include the post to share.
Additionally, inserting a short-link of a post in another one will display an extract of the original post.
no more duplicate content, just sharing !

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