Until last week guest post was the most trusted method of link building a.k.a SEO and today it is in the death bed. Guest blogging is no safe for SEO.
Earlier last week when MyBlogGuest got penalized for a guest blogging, the industry was in panic and the result is Econsultancy now nofollows all the links form contributor & Guest posts.
No doubt Econsultancy is a respected internet marketing blog with high quality editorial content. But it seems as they say, they want to play it safe.
The debate on guest blogging will live on for some time now. Check out the conversation going on in Twitter about this change.