Why are we so much more interesting on the net?

On sites such as these, I love to read the questions and answers because I find what people have to say so interesting. To me it seems that people on the net open up more, and share. Their opinions, their ideas and what kinds of things they like to think about.

In real life we seem to be bound by the dance of etiquette, small talk is the order of the day. People are more guarded, less trusting. No doubt because they have no where to hide, like we do. I often wish I could have more interesting conversations in real life like we do here for example and share more of oneself. Does this idea ever cross your mind? Do you think that is why the net has become even more popular? Because in real life this has become unacceptable? Leading to a feeling of alienation.