Sometimes technology can be put to really great use. Sometimes it can just be used to spy on us.

Researchers Nitesh Dhanjani and Akshay Aggarwal are developing a tool which allows them to create a real time picture of how an Internet user is feeling, based on their profile on a series of social networking sites.

"It will tell you what's going on in your brain," says Dhanjani.

I know super-geeks can be a bit clueless about emotional stuff, so I'm going to spell this one out: I already know how I'm feeling. (I know a lot more about myself than Facebook does).

So if you want to know how I'm feeling, ask me. And if I want you to know the answer, I'll tell you. Otherwise, stop the stalking. Sorry, I mean 'profiling'...

Via CNET news.