Automatically publishes your new and old blog content to Social Networks. Auto posts to Twitter, Facebook, Linkedin, Tumblr, Blogger, Xing..
Syndicates posts made in any specified category to another WP blog using WordPress' built in XML-RPC functionality.
WP-United integrates phpBB and WordPress to make a social site. Enable any of these modules: sign-on, theming, widgets, cross-posting and behaviour.
Increase your Visibility and Blog Traffic. This plugin allows you to write a WordPress blog and cross-post it to your blog at BestThinking.com.
Crosspost blog entries to LiveJournal automatically or on a post by post basis. Crosspostable options include user pic, current music, current mood, s
Use a shortcode to include a file (or just a part of a file by using text delimiters) into the current post from any URL, or from the local server.
Allow a user to author a post accross multiple blogs in the same Multi-Site install.
Automatically, cross-posting to assiciated site/blog to enabling the post-via-email option with PIN code e.g. multiply.com, livejournal.com, blogspot.
Cross Post plugin for WordPress MU. Allows a post to appear in multiple blogs.