Umbrovskis.com

List of spammers in <a href="https://wordpress.org/plugins/wp-referrer-spam-blacklist/faq/" rel="ugc">FAQ</a>.
No need for configuration! Plugin in background redirects referral spammer to blank page ( about:blank ). Redirect link can be altered via filter <code>wp_referralblock_redirect_uri</code>.
NO auto update, as we see that as possible as security hole. We do not wan’t Your site to get hacked.
Plugin is for sites that can’t edit their <code>.htaccess</code> or configure NGINX or Apache servers.
Via <a href="http://go.mediabox.lv/1LbSuKq" rel="nofollow ugc">my LinkedIN post</a>: Few months ago I started to collect referral spam pages in private file un bitbucket.org. Problem was that I did not know all spammers. Then, few weeks ago, I found that Matomo (Open source analytics) started their own “project”, and they did the same thing I did – collected referral spam sites to block them from Your website.
On my own server I do that at server level, but some of my clients have hosting, where You can not edit server settings. This week I came up with another solution – WordPress plugin “WP referrer spam blacklist”. I will update list every week from <a href="https://github.com/matomo-org/referrer-spam-blacklist" rel="nofollow ugc">Matomo’s community-contributed list of spammers</a>.
If You have WordPress site and no knowledge about or access to server settings, I made that for You!
From <a href="https://en.wikipedia.org/wiki/Referer_spam" rel="nofollow ugc">Wikipedia</a>:
<pre><code>Referrer spam (also known as log spam or referrer 
bombing) is a kind of spamdexing (spamming aimed 
at search engines). The technique involves making 
repeated web site requests using a fake referer URL 
to the site the spammer wishes to advertise. Sites that 
publish their access logs, including referer statistics, 
will then inadvertently link back to the spammer's site. 
These links will be indexed by search engines 
as they crawl the access logs. 

This benefits the spammer because the free link improves 
the spammer site's search engine ranking owing 
to link-counting algorithms that search engines use.
</code></pre>
Other plugins by author: <a href="https://wordpress.org/plugins/itempropwp/" rel="ugc">itemprop WP for SERP/SEO Rich snippets</a> – Add schema.org itemprop code to the (custom) post content for search engines and bots for better SERP results

WP referrer spam blacklist (fight 2040+ Referrer Spammers in (Google/Matomo) Analytics)

WordPress plugin to fight with 2040+ referrer spammers (like semalt, buttons-for-website and many more).

M Asif Rahman

<a href="http://wpdeveloper.net/" rel="nofollow ugc">WPDeveloper.net</a> brings ‘Block Referral Spam’ for all WordPress user for free.
This plugins blocks the most number of Referral Spams. Now no more notice from Google and no more weird report in Google Analytics.
Its super simple to use, nothing to setup, just install and activate the plugin, we will protect from 375+ separate domain (thanks to the user contribution) that spam your Google Analytics. This domain list is always increasing and biggest list available online.
You could give feedback to us directly, and suggest new spam domain, <a href="https://wpdeveloper.net/go/BRS-UO" rel="nofollow ugc">click here</a>.
Here is our <a href="https://wpdeveloper.net/go/Blog-BRS-A1" rel="nofollow ugc">blog post</a>, on how to get Top Referrer right from your WordPress Dashboard.
Check Our Other Plugins:
<ul>
<li><a href="https://wordpress.org/plugins/wp-analytify/" rel="ugc">Analytify – Ultimate Google Analytics Dashboard</a></li>
<li><a href="https://wordpress.org/plugins/twitter-cards-meta/" rel="ugc">Twitter Cards Meta</a> </li>
<li><a href="https://wpdeveloper.net/free-plugin/wp-scheduled-posts/" rel="nofollow ugc">WP Scheduled Posts</a> </li>
<li><a href="https://wordpress.org/plugins/facebook-secret-meta/" rel="ugc">Facebook Secret Meta</a> </li>
<li><a href="https://wordpress.org/plugins/wp-author-report-free/" rel="ugc">WP Author Report Free</a> </li>
</ul>
<blockquote>
Contribute in GitHub!! 
 Contribute in GitHub. <a href="https://github.com/ARCommunications/Block-Referral-Spam" rel="nofollow ugc">Click here</a>!
</blockquote>
This plugin is a great example of OpenSource community. Pull request are very welcome and usually accepted within 24hr. Together we fight with evil spam bot.
Don’t get confused with the term Referrer Spam or Referral Spam or Referer Spam. Google basically calls it Referral Traffic. It’s all mean the same thing.
<h3>Donation</h3>
You could use our free & pro plugins fro link below.
https://wpdeveloper.net/

Block Referral Spam

This plugins blocks maximum Referral Spams. Now no more notice from Google and no more weird report in Google Analytics.

WP referrer spam blacklist (fight 2040+ Referrer Spammers in (Google/Matomo) Analytics) vs Block Referral Spam