"I know it seems all I have given you in the last couple pages is bad news. But it's bad news "you need to know and understand". Your computer is like a giant trash can, and it's getting fuller and fuller every day. Everybody at the big software companies, at websites, even those who email you are filling your computer with junk. If you don't understand this and know what to do about it, eventually your computer will start to run slower, have errors and crash. "