Why Blogs that Allow Guest Posts Will Be Penalized in 2013
ProBlogger
FEBRUARY 14, 2013
Just as low-level article directories (ezinearticles, articlesbase, and others) got hurt by Google’s Panda Update in 2013, I predict that Google will hurt sites abusing guest blogging in 2013. For example, check out this case , this example , and this one. The most important part of the example is the Google+ link.
Let's personalize your content