SPAMbots spreading SPAM comments

I was reading my Google Reader today and noticed a question by DailyWritingTips asking about Nylon Stockings and Denier Spam.

If you have a blog, or forum, or even just e-mail then you have probably seen what the DailyWritingTips entry calls "Denier Spam" - it is the comments that are written as if the person is struggling with the language and is not quite sure what it is they want to say. It is often barely, if at all, on the topic of a post. In the more easily spotted examples it is complete gibberish that looks like a monkey was given a bag full of tiles with words on them and someone wrote out each word as the monkey pulled it out of the bag.

The first impulse is to assume that these are SPAM and it is an effort to embed links on your blog. Then many blog owners are tripped up on what to think because the comment has no evidence of any links.

My perspective on it is that the comments are posted by bots that search for websites where they can post a comment, then they look at the page again to see if they can locate the same words in the same sequence. That tells them if the comment is automatically approved. If it is, then the bot records the information on where the comment was posted and proceeds to post spam comments to the site.

That is why I deny comments that look funny in their writing or have a lot of poorly spelled words and any comment that just looks like it was wrote based on observations of a monkey with a bag of word tiles. Once those comments make it through the filter system, they are a giant flag to SPAMbots that the site will allow SPAM comments.