While I was working on my game I found interesting service that can generate direct links to share in facebook, twitter and google+
http://www.sharelinkgenerator.com/
http://fnohe.net/facebook-share-link-generator/
Last one is for facebook only but there you can add custom image and description
I think it can be useful if you want to create custom share/status buttons. Basically you just create an action for browser object: "go to url" and add generated link.