The xPinner Lite plugin works absolutely automatically and does not require any manual input. It does not matter how exactly your post was added - manually or it was created by a content automation script like CyberSyn.
The plugin is able to automatically extract a first, last or a random image from a regular post/page body, WordPress galleries, NextGEN galleries, post thumbnail or a custom field with a given name and automatically pin it!
The xPinner Lite plugin will pin images not only from the new posts, but from old ones too!
You can limit the oldness of posts that can be processed by xPinner Lite.
You can set the frequencies of pins to avoid your account suspension for a too frequent pinning.