Most people believe that they can do anything they want when online. They assume no one will know about the identity and where they are located. This makes them think of doing something that could fool others. For example, create a nasty email about fake job offers, which is commonly known as a scam, which is distributed to the public.
No matter how anonymous they think, but there is one way to find out the location where they are is by checking the IP addresses they use.