Vigilance is the only cure for comment spam

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One of the best ways to demonstrate expertise and establish a positive reputation for your business or your employer is by sharing information through posts on a website. And one of the best ways to engage customers is to allow comments on those posts and to respond to them. If you’re not careful, though, spammers will derail your comments and possibly drive potential customers away.

new report from Imperva reveals that 80 percent of the comment spam originates from less than one-third of the spammers, and a mere 17 percent of comment spammers actually account for a majority of the comment spam traffic. Imperva also found that nearly 60 percent of comment spammers are active for long periods of time.

Wikipedia defines comment spam as "a broad category of spam bot postings, which abuse Web-based forms to post unsolicited advertisements as comments on forums, blogs, wikis and online guest books.”

Simply put, it is an unwanted solicitation. Just like email spam for Viagra or low-interest home refinancing that are hopefully automatically detected and siphoned off to your junkmail folder, comment spam interjects ads into the comment thread of a blog post.

The comment itself is sometimes at least remotely related to the topic of the post, and generally contains a link that the spammer hopes you will click. Frequently, though, the comment spam has nothing to with your post or the conversation about it and may even be worded as if it was intended for someone else and “accidentally” shared with you—revealing tidbits of information with the intent of baiting you to want to learn more by clicking a link.

The best way to avoid being overrun with comment spam is to be vigilant about monitoring comments on your site. Requiring some sort of Captcha or user validation for posting comments will help reduce comment spam, but there are automated tools capable of overcoming those challenges as well.

Pay attention to the comments that are posted. If the amount of comment traffic isn’t too high, you can configure it so that every comment must be manually approved before it posts. If there is a lot of traffic, though, that can be tedious and overwhelming. Instead, you can allow the comments to post, but review all new comments periodically to identify comment spam. Most platforms have some mechanism to allow you to block any future comments from a specific user or IP address. Doing so will greatly reduce the comment spam on your site, and doing so consistently will eventually cause comment spammers (or automated comment spam tools) to search for easier targets.

Take a closer look at the complete report from Imperva to learn more about how comment spammers operate, and what you can do to avoid or block comment spam on your site.

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