You already know the power that blogs have on the search engines. The ability of the contents of the posts to slip between the top of any page of results, in fact, sometimes it is hard not to find a blog in the top ten results for any key phrase.
This advantage of blogs that are positioning becomes the worst some times. The bloggers are often people wary of the Internet, some web sites often achieve notoriety of several blogs.
This condition typically push the bloggers that they should post with maximum care thinking about the content. The reason is simple, most of the first search results, as we have said, often come from blogs. In many cases the information presented is too superficial, not delve into the analysis and, therefore, the user left with no comment. Google might think that result is irrelevant and move that to 5th result (for example). If that happens with lot of articles and too often, the whole website might be marked as spam by search engines (read Google). This is why we need to increase the visitors stay time in one post.
Bloggers tend to write short articles, descriptive but shallow. Clearly, not all do and all the contents deserve further development, but sometimes one must be careful as possible.