Tough times

I just found out that my teenage son has been on the internet, and has created a myspace page, that has a ton of profanity, and leud pictures on it. Now I have to figure out what to do. I had made him take down his myspace site before, because it had a few cuss words on it, and it wasn't an appropriate site. But this latest site is so much worse. I honestly don't know what to do. If I punish him, the way that I am feeling now. I do know that it would be extreme. He is past the time of whipping, so all that I can do is take things from him, and ground him. Which I will probably do. Sometimes it is tough being a parent. You think you are raising you kids right, and then you find out differently.