I Am Afraid To Click My Own Blog!

I was racking my brains on how to make money online or working from home or whatever. I tried to learn more about Google Adsense. I almost signed up for it but there are tons to read on their policy. So I didn't complete the process and decided to wait a while. I clicked view my blog to get away from the Ad nonsense. And when I see my blog, there is an ad which was not placed there by myself. It says Google Friend Connect or something like that. Now I remember that one thing about the Adsense was that I am not supposed to do the clicking myself. So I have a problem. There is this ad and I don't know what to do with it. And I haven't yet registered with adsense. So what is the use of having something on my blog which I have no idea about?