The site can easily put you in bad mood as the negative posts on Facebook are contagious. Thankfully, the opposite can be said about positive posts: see an upbeat update, and you're more likely to feel like smiling yourself. I made this tool to quickly identify negative posts so it has less effect on me even if I read them.

All the sentiment analysis is done locally using the awesome sentiment library.
No personally identifiable data is sent to any server.