Controlling Comment Spam on your Blog

As soon as your blog begins to attract traffic, as sure as night follows day, it will attract comment spam.


Because blogs are a rich target! Anyone can post comments and links to the site, blogs rank well in search and people click the links on them all the time.

What is Comment Spam?

It’s where a comment is posted for the express purpose of gaining a valuable link and directing some traffic to an unrelated site.

How is it done?

At a simple level, individuals carry out a search on a topic, find your site and post a comment and link to theirs. These can be quite hard to detect, as the comment can seem relevant, so often only by clicking on the link will you find out it’s spam. There are also spam “robots” which simply find sites and post rubbish and a link – these are easy to spot.

What’s the Scale of This?

It’s huge! Mike’s Life is only four months old, but in the last 72 days my spam blocker has rejected almost 12,000 spam messages! That’s over 160 a day – even if it only took me 10 seconds to remove each comment, that’s a full week’s work I would have done in that time.

What’s the Solution?

Fortunately the solution is simple. Get yourself a spam filter – there are several on the market, most available for all types of blog. The one is use is:



And it’s free! Mollom is nothing short of brilliant – it simply does it’s job, without any intrusion.

How Does Mollom Work?

  • Mollom analyses attempts to post content via comments, contact forms, blog posts etc (you decide what)
  • It then decides, based on simple parameters, if the attempt is “Spam” or “Ham”
  • If it’s unsure, Mollom will ask the poster to complete a screen capture (this is rare, about 2% of cases)
  • Good comments get posted, the rubbish doesn’t!
  • Mollom also provides you with a section on your blog to report comments that do slip through the net, although that has never happened to me
  • You also get detailed stats showing you what Mollom is doing for your site

What are the Overall Statistics?

  • Mollom is currently working with more than 7,000 websites
  • Only 5 in 10,000 spam attempts make it through Mollom
  • Almost 50 million Spam messages have been caught by the system since Mollom started!

How do I get it?

Mollom is available as a free download at their site.

If you enjoyed this, you may also enjoy:

1/ Why you should switch to Google

2/ Make it easy for your blog readers!

3/ Getting comments on your blog

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"Mike's Life is where you can stay current with the life, thoughts, successes and failures of Mike Cliffe-Jones. Never knowingly ordinary, Mike shares as much as possible about his work as a marketer and in business, as well as his enviable lifestyle on and in the oceans around The Canary Islands."

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