Why create a fake duplicate / clone website?
...what is the reason for doing such a nonsense thing?
They might...
be associated with a competitor and want to take traffic away from your site. An exact clone of your site on another domain can only be detrimental to your sites SEO.
be trying to increase the value of their domain (an established site that receives lots of traffic), which they can then later sell on for a profit. Your site is just an unfortunate pawn in the process, selected because of its popularity.
be trying to serve malware to unsuspecting visitors by injecting malicious links/code into the cloned site. (Since the cloned site is relatively easy to setup and appears to be attracting a large number of visitors.)
It can also depend on the website, how it is being cloned and modified. They might also:
- profit from changing the advertising network to one of their own.
The first thing you should do is report that website to google and other authorities secondly you should create a filter in google analytics that includes hits from only your hostname
Hope this helps,