I came across this answer which received the following comment
Beg pardon. Not product. Blog. Using StackExchange to drive traffic to your site is bad form.
And then in an edit by another user the blog post was copied seemingly verbatim with the comment
I've added your instructions here, since there was absolutely no reason to link to your blog other than to drive traffic there.
The original answer could have been improved and had a disclaimer stating that it was his blog, but the blog does state All content © 2012 Seb Maynard, so having someone edit his answer with an exact copy doesn't seem like the right move.
The blog owner seems to be OK with this edit, but should this edit have been done in the first place? It seems like he should have been given a chance to improve his answer with an appropriate level of detail. I understand that there needs to be some context, but if someone spends the time to post a blog article then their copyright should be respected.