Defensio
Defensio 2.0 secures your social media postings
Defensio scans your social media pages to see if anyone has posted links to malicious content or pornographic web sites, for example.
The service can be fine-tuned to allow you to block links to external websites based on their category. It can also detect, reject and mask swear words from postings.
Download it here: http://defensio.com/downloads.