Annoying phone calls

Recently I seem to be getting a lot of phone calls from random people that I don't know. Some calls actually show up on the caller ID with a person's name and some show up as "unknown." They never leave a message. I usually don't answer the phone if I don't know who it is, but I am always curious as to who they might be. I have learned that you can Google phone numbers, but that doesn't always show something. Today while Googling a phone number I found a pretty cool website called 800Notes: Directory of Unknown Callers. You can search for phone numbers and see if other people have commented about it, as well as make comments yourself. Check it out!