Does Internet isolate people from real social interactions? Or does it foster more social interaction?

I think that the internet plays a role in both. For instance we don't even have to leave our houses to find out anything thats happened. At the same time however the internet has helped with social interactions. For me if it weren't for the internet I would not have contact with much of my family who live in Europe or the ones in Las Vegas, Minnesota, Arizona and where ever else. Every situation, like internet, has it's positives and negatives, the real question is, do they out way each other?