Extension like Ghostery or WOT for propaganda

I have been looking for and cannot find an extension that would give a pop-up (like Ghostery does) letting me know if a web page I am reading, was published by one of the major mass media corporations. I am talking about:

When researching a topic, it would be good to know I’m also reading from alternative sources, just to make sure I am getting the whole picture.
This extension could be like Adblock, in the sense that people create independent lists.

I’m assuming you’re asking someone to make one?

If someone sees this idea and likes it, run with it. I am not a software developer. I can help beta test though. Please keep it open source!

This isn’t really the right place to ask for it, I’m not sure where that is though. I think a freelance programmer site may be the best place to find someone.

This add-on is the closest I know to what you’re asking for. It’s focused on one side of the media but maybe can serve as a starting point for what you need.

arenlor: I think it’s the perfect place, to present an idea that a developer that may like and want to adopt. I’m not taking ownership of the idea.

jorgev: Nice, that’s what I had in mind, just on a larger scale.