The WP Remote Connections plugin will allow you to send content from a WordPress site to one or many WordPress sites remotely.
You will be able to send posts, pages and media objects. The plugin will submit ALL the data attached to a given post or page (basic content plus featured image, categories, tags, custom fields…) or media (the file itself plus title, description, alternate text, and so on). You will save plenty of time when it comes to recreating and publishing existing content from one of your sites onto another or several of your websites. That is incredibly useful for blog networks, magazines, newspapers, etc. but the limit is your imagination.
So, if your are one of those people who spend time duplicating WordPress content on several sites, This is your plugin!