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Our Comment Spam Prevention Keyword List
Ed Kohler

I mentioned in an earlier post on How to Combat Comment Spam  that keyword filtering has been the most effective strategy for combating comment spam used on this blog so far. Since that post went live, the site has seen an uptick in search engine referrals from people looking for a good keyword list to use in their own blogs.

I spent some time thinking about whether it would be smart to publish such a list. After all, wouldn't publishing a list of spam filtering keywords tip off spammers to how they're being snubbed? I analyzed what blog comment spammers are trying to achieve: high rankings in search engines for terms that are important to them.

You know what the really great thing is about comment spam from a blog owner's perspective? Spammers are attempting to rank high for specific search terms by using those terms in the links they drop on your site. This makes comment spam different from email spam where a spammer can get around email spam filters with misspellings like p0rn, v1agra, or casinnos while still getting their message across to consumers. Comment spam attempts to make a site rank high for the terms people actually search for so correct spellings must be used.

Because of this, I think it's safe to publish a list of terms we've identified as spammy without hurting the blogosphere. This list may be useful to you if you run a site that allows public comments that can be moderated at the keyword level. The list largely consists of porn, pills, or casino related terms along with some financing terms. You may need to adjust the list if there is some overlap with your site's themes that could generate a lot of false-positives.

WARNING: There are some nasty terms on this list. Please to not read on if you're easily offended. By publishing this list once on this site, I think I can prevent the same terms from showing up in the comments on this and other sites in the future.

Comment Spam Prevention Keyword List

ababa
alprazolam
ariset
blackjack
buspar
butalbital
carisoprodol
casino
celexa
cialis
citibank
cyberturf
didrex
dosage
dx1
ejaculation
ejactulation
fioricet
foreclosure
forex
freemegavideo
gambling
hochulexus
holdem
hollyvalance
homeloan
horny
insurance
keno
mortgage
nasonex
nfsautoloan
penis
phentermine
poker
porevo
prequalify
prozac
refinance
ringtone
ringtones
slots
sperm
straponclub
tramadol
ultram
viagra
xanax
yasamohuel
yigan999
zyban

Movable Type Instructions

If you happen to use Movable Type, you can add the terms by clicking Settings > Plugins > Spamlookup Keyword Filter > Show Settings. Add them to either the "Keywords to Moderate" or "Keywords to Junk" field depending on how aggressively you want to deal with comments using the above terms. We currently distribute the above terms fairly evenly between the two moderation levels. For example, "tramadol" is automatically junked, while "mortgage" is simply moderated since a person may use the term mortgage in a non-spammy manner from time to time in a comment.

The Future of Comment Spam

One growth area for this list is pharmaceuticals. As new drugs are released and marketed using black-hat tactics like comment spam our comment filter will grow.

How You Can Help

Are there additional spammy keywords you've found valuable having on your spam list? If so, let us know in the comments area. Keep in mind that your comment will be moderated or junked if we already know about the term.




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Comments

1. Posted by: roger on March 21, 2006 12:15 AM:

Here's another:

netcialis


I'm building an IP blacklist. I've had well over 40 spamments on a single post of a single blog in 3 weeks time and I'm tired of moderating. I don't know the wisdom of an IP blacklist: it may not be effective. But maybe the threat of sending such a list to fraud-prevention agencies may make a difference.




2. Posted by: Ed Kohler on March 21, 2006 12:54 AM:

That looks like a good term to junk rather than moderate for this site. Thanks. IP based spam protection shouldn't be ignored, but it's only one of many techniques needed to really keep things under control.




3. Posted by: Angeline Julie on May 11, 2007 12:20 AM:

I am glad to post my views and points in this blog, but I must say that webmaster of this blog has done a very great job to make his blog more informative and more discussable but unfortunately everthing is same here that more than 80% in this and other blogs post their comments for making spam!!!, so i will really all this spam links to google band tool, because webmaster makes blogs for making discuss and for sloving each other problems. thanks http://www.gordoniihoodia.net




4. Posted by: hwflkjybrc on August 8, 2007 1:32 PM:

Hello! Good Site! Thanks you! mvzztzkaqsjfyf




5. Posted by: tom on December 6, 2008 7:25 AM:

Cool.... but why don't you simply use (for example) corlive.com?




6. Posted by: Anon on January 24, 2009 3:35 PM:

Oh the irony of comment 3.




7. Posted by: WARLOCKMAN on June 13, 2009 8:15 AM:

Я с вами согласен :) Для меня это как раз очень актуально :)




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