I saw a particularly annoying form of comment spam in Dorothea Salo’s excellent summary of various kinds of open information:
The author link points to the site of what appears to be a Turkish dietary supplement vendor. Just a bit off-topic, unless this is somehow a subtle way of announcing that they’re releasing their supplement under an open recipe license. What really steams me: the text was copied from one of my comments on the post.
Failing grade for plagiarism.