Chris Klosowski

Pretty simple. Just blocks semalt.semalt.com with a 403.
If your web host uses a web server that doesn’t support .htaccess, then this plugin is for you.
If your host supports .htaccess, you should try https://wordpress.org/plugins/block-semalt, as this is the best method.

WP Block Semalt

Simply uses the HTTP_REFERER to determine if it's from 'Semalt', and blocks it with a nice 403 "Unauthorized" response.

mickmel

ashlealanier

This blocks semalt.com, buttons-for-website.com and others with a 403 Forbidden message so that they no longer show up in your Google Analytics stats. This won’t block ghost referrals (no plugin can do that), but <a href="http://www.greenmellenmedia.com/blocking-ghost-referrals-in-google-analytics/" rel="nofollow ugc">this short video</a> will walk you through that process in Google Analytics.
Once installed, this plugin will run automatically in the background; there is no options panel or anything to see in your dashboard.
Other sites will be added to the block list over time via updates to this plugin.
For more information, visit us at <a href="http://www.greenmellenmedia.com" rel="nofollow ugc">GreenMellenMedia.com</a> or find us on Twitter <a href="http://twitter.com/greenmellen" rel="nofollow ugc">@GreenMellen</a>.
Current list of blocked bots: All sites ending in .xyz, 100dollars-seo.com, 4webmasters.org, 7makemoneyonline.com, adviceforum.info, aliexpress.com, amazonaws.com, anticrawler.org, avtlg.ru, bashtel.ru, best-seo-offer.com, best-seo-solution.com, bestsub.com, bestwebsitesawards.com, blackhatworth.com, burger-imperia.com, buttons-for-website.com, buttons-for-your-website.com, buy-cheap-online.info, chinese-amezon.com, clicksor.com, copyrightclaims.org, corbina.ru, cpty.com, darodar.com, depositfiles-porn.ga, domination.ml, e-buyeasy.com, ebin.cc, econom.co, erot.co, ertelecom.ru, event-tracking.com, fix-website-errors.com, free-floating-buttons.com, floating-share-buttons.com, free-share-buttons.com, free-share-buttons.top, free-social-buttons.com, free-video-tool.com, get-free-social-traffic.com, get-free-traffic-now.com, ɢoogle.com, googlsucks.com, guardlink.com, guardlink.org, hol.es, hongfanji.com, how-to-earn-quick-money.com, howtostopreferralspam.eu, hulfingtonpost.com, hvd-store.com, ilovevitaly.*, is74.ru, kabbalah-red-bracelets.com, kambasoft.com, kes.ru, keywords-monitoring-your-success.com, lifehacĸer.com, magicdiet.gq, makemoneyonline.com, monetizationking.net, mts.ru, mts-nn.ru, nationalcablenetworks.ru, netbynet.ru, o-o-6-o-o.com, pizza-tycoon.com, pogodnyyeavarii.gq, pornhub-forum.ga, priceg.com, qualitymarketzone.com, rank-checker.online, ranking2017.ga, rankings-analytics.com, rankscanner.com, ranksonic.org/info, sanjosestartups.com, sashagreyblog.ga, savetubevideo.com, search.myway.com, search.tb.ask.com, semalt.com, seo-platform.com, sexyali.com, simple-share-buttons.com, site-16528012-1.snip.tw, site-auditor.online, sitequest.ru, snip.to, social-buttons-*, social-s-*, success-seo.com, theguardlan.com, top1-seo-service.com, torture.ml, traffic2money.com, trafficmonetizer.net, uni.me, uptime.com, video–production.com, videos-for-your-business.com, webmonetizer.net, website-analyzer.info, works.if.ua, wow.com, youporn-forum.ga, yourserverisdown.com

GM Block Bots

This blocks semalt.com, buttons-for-website.com and others with a 403 Forbidden message so that they no longer show up in your Google Analytics stats.

WP Block Semalt vs GM Block Bots