One of the biggest issues currently facing bloggers is the spam epidemic. Not only are spammers stealing our content, but they are also spamming us via blog comments.
Traditional Spam
Some comments are obviously spam. These are sent all over the place in massive quantities. They are the main threat - but luckily they are almost always caught by Akismet.
Less Spammy Comments
Several new programs and services have come out recently that let people advertise their blogs via comments. Essentially they spam you, but not nearly as badly as massively sent spam comments. Here’s one I got the other day:

The program they use simply copies your title, tosses it in with some text, and makes it seem friendly. One look at the URL should make anyone think it is spam.
Paid-For Comments
Another way you may get comment spam is from “paid-for comment” services. Basically they pay people advertise someone’s product or website. This form of spam is much less dangerous (it doesn’t hurt your blog’s appearance as much), but it should still be dealt with.
The best way to figure out if a comment was paid-for is to look at a few things:
E-mail Address - If it is a yahoo address (or gmail, hotmail, etc) but the URL is some product page - be aware. Usually they are from paid-comment services.
URL - If the URL points to a product page instead of the homepage for a blog or website, you might also be dealing with a spam comment. Often times the product being advertised will be similar to auto-blog software or “get rich quick” books.
Do they talk like a robot? - If the commentator sounds like this: “This water purifier is the greatest water purifier on the planet… blah blah”, then it is most likely someone getting paid to comment.
Be Strict
Put a zero tolerance policy in place that says spam and paid-for comments are not allowed. Be strict about it as well - delete any comments that seem a bit too spammy. However, do take note that sometimes public relations people from big companies might leave comments talking about their product if you talked about it on your post. Those are alright. What you want to look out for are people who are attempting to get a bunch of free advertising and to hype up a product.
While a comment like “Cool, I run a SEO blog of my own also” may be acceptable depending on where it links to (check the website), comments like “Our service is the best service and it can make you money” are usually considered a bit spammy. Good companies won’t go around trying to hype the heck out of their product in blog comments. That is what press releases and ReviewMe/PayPerPost are for.
Stay tuned for more Back To The Basics posts.
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September 22nd, 2007 at 6:24 pm
[…] Day 13: A Look At The Different Types Of Comment Spam […]
September 23rd, 2007 at 2:28 am
I am also very quick at deleting suspecting comments. I don’t really care if that was the only comment I received in a particular posts.
I have also deleted comments such as “Nice post!”, “Great job!” despite knowing that they are legitimate because I want the blogger to know that it isn’t OK to leave me such comments. If you’re too lazy to type anything decent that will contribute to the conversation, don’t then.
September 23rd, 2007 at 9:26 am
For me deleting “nice post” and “great job” usually depends on how spammy their site is, and what mood I’m in. Actually that’s how most comments go here, even if it is a nice 3 paragraph long chunk of feedback, if the person links to a spammy blog the comment is gone immediately. I’m especially picky because of the fact DoFollow is enabled, don’t really want to link to sites that Google considers bad.
September 23rd, 2007 at 12:18 pm
Between akismet and moderation spam isn’t an issue. I suppose I shouldn’t say that without knocking on wood first, I’m sure that some people have stories about being inundated with comment spam.
September 23rd, 2007 at 12:30 pm
Yeah, generally speaking things go pretty smoothly here as well. Although, about 3 months ago there was a pretty massive comment spam attack here, got close to 1,000 spams in about a day, and around 20% made it through Akismet.
That was fun to clean up.
April 9th, 2008 at 10:40 pm
Well, this isn’t spam. Interesting post. I’m new to blogging and soon to start a Wordpress blog. I was looking around the net and came across your site. I never realized that there was such a thing as companies that post on blogs as a business model.
What is the internet coming to?
April 9th, 2008 at 11:49 pm
Yeah, it is a bit worrisome. Fortunately spam blockers like Akismet are getting much better at destroying it. Let’s just hope those spam companies don’t open up sweat shops and pay dozens of children meager wages to do nothing but spam blogs.
Oh dear, I think I just invented a new spam business model…