Guest blogging has been a great way for marketers to reach new audiences while building back links to their sites, but those days seem to be numbered. Google has been hinting for a while now about cracking down on guest blogging, mostly because it is seen as a low-quality addition to the scope of the niche the blog is about. Admittedly, most guest blogs are poorly veiled attempts at gaining some links back to the author's site, but that's not to say there aren't some amazing guest blog posts out there.
