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What is referrer spam? Is that any negative effect for my ranking?

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Dani AI

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As noted, referrer spam mainly pollutes logs and analytics and can waste server resources. That makes SEO work harder because decisions get based on bad data, but it rarely causes a direct penalty in search rankings. The useful distinction is between (a) crawler/referrer bots that actually hit the site and consume resources, and (b) “ghost”/measurement-protocol spam that never visits the site but injects fake hits into Google Analytics.

Common signals that a site is being hit:

  • Hostname in Google Analytics that is not the site (or is “(not set)”), or referrals showing domains that never actually linked to the site.
  • Sessions with one page, 100% bounce, zero seconds, and impossible locations/hostnames.
  • Sudden spikes coming from many different referrers with identical session behavior.

Practical steps to reduce noise (test in a copied view first; filters are destructive):

  • In Analytics (Universal): create a new view and add a Custom Include filter for Hostname with a regex of valid hostnames, e.g. 
    ^(www\.example\.com|example\.com)$
  • Enable “Exclude all hits from known bots and spiders” where available to remove obvious crawlers.
  • For crawler spam at the server level, block by referrer or agent in webserver configs or firewall. Example Apache rule pattern:
    RewriteEngine On
RewriteCond %{HTTP_REFERER} (spamdomain1|spamdomain2)\. [NC]
RewriteRule .* - [F,L]
  • For user-generated content (forum posts, signatures): enforce moderation, add rel="nofollow" on user links, and use CAPTCHA/new-account checks to stop signature link abuse (as and highlighted).

Final note: cleaning analytics and stopping bots at the server both help. Filters fix reporting; server blocks reduce real load. Keep a raw, unfiltered view for debugging and test any rule before applying it to main reports.

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Member Avatar for Seobytes

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 referrer url that points to the site the spammer wishes to advertise.[2] Sites that publicize their access logs, including referrer statistics, will then end up linking to the spammer's site, which will in turn be indexed by the search engines as they crawl the access logs.

This benefits the spammer because of the free link, and also gives the spammer's site improved search engine ranking due to link-counting algorithms that search engines use.

Referrer spamming consumes server resources which are paid for by the website owner or ISP. It slows down access to the site for normal surfers. It uses disk space. It clogs weblogs with bogus information. It subverts the ranking mechanisms used by search engines. Spammers are nothing more than leeches sucking the lifeblood out of the web.

Source : Wikipedia

Member Avatar for crunchie

It should also include those who post only to expose their spammy signature links. The sig links here at Daniweb cannot be seen by anyone other than Daniweb members, so most are just wasting their time.
This description applies to the OP who has asked 6 different questions in separate threads and obviously has no interest in the answer(s).

Edited by crunchie because: n/a
Member Avatar for steve.s

If your are posting unnecessary comments on the forums & blogs then that comments are called as a spam. And because of that they will banned you..

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