I'm not sure whether the blogs have been brought into the GeoNet umbrella yet. But I'm seeing a recurring problem whereby links to blogs fail to resolve every few times.
The first time I click on it, I'm taken to the root level of the blog: http://blogs.esri.com/esri/arcgis/ rather than to the article.
If I go back to the Google search and click the link again, it works as expected. This seems to be a regular WordPress site so I'm not sure what's going on to cause the problem.