Hi @cuta,
What you’re talking about is analytics referrer spam. That’s something different. WP-SpamShield blocks spam that is sent to your site via POST requests: Comments, Contact Forms, User Registrations, Pingbacks/Trackbacks, and just about every other type of form.
Referrer spam bots can be blocked in your .htaccess
file without even using a plugin.
Here is a good tutorial. You can Google to find others.
Hope that helps!
– Scott