Plugin to share about your old posts on twitter, facebook, linkedin to get more hits for them and keep them alive.
Send WordPress Pages, Posts or Custom Post Types to your Buffer (bufferapp.com) account for scheduled publishing to social networks.
Get more social traffic by easily connecting your WordPress to Buffer, and automatically sharing posts & pages to Twitter, Facebook, LinkedIn, etc
Plugin that automatically tweets your old posts (including custom posts) which helps you increase the traffic on your website.
This plugin allows site owners to automatically schedule and reshare their content on Twitter and increase social traffic without lifting a finger.
WP Linkpush Buddy allows blog posters to use Linkpush services directly from their WP Add New Post form.