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Link Spam

Possible solutions

  • Recently Google introduced an HTML attribute ( to prevent ranking credits. Search engines and weblog software already follow this convention.:
        <a href="" rel="nofollow">Link</a>
  • Instead of displaying a direct hyperlink submitted by a visitor, a web application could display a link to a script on its own website that redirects to the correct URL . This will not prevent all spam since spammers do not always check for link redirection but has proven very effective. Redirecting links prevent Google from factoring the link in its PageRank algorithm for that site making the spam ineffective. An added benefit is that your redirection script can count how many people visit external URLs, but one drawback is the increased load on your website.
  • Idea: However, the script could also be client-side JavaScript . For example,
        <a href="javascript:window.location.href=''">Link</a>
        <a href="javascript:redirectFunction('hfksksgjlsll')">Link</a>
  • This redirect can also be done via the .htaccess file in Apache , thus saving the load of a script.
  • Require the user to solve a captcha , preventing bots from submitting entries.

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Reprinted from Wikipedia, The Free-Content Encyclopedia under the GNU Free Documentation License.

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October 23 2016 06:05 UTC