Why would a user be "frustrated" if they found out something was paid instead of posted naturally? I figure, the most important aspect would be the source of the content and if the source has some type of authority, then any advertorials written, paid or not, would have to be some what relevant to their website and brand. While there are a pleather of reasons why Google Search is not a fan of this method, I believe one of the largest concerns is because they pass authority through keyword-rich anchor text, and game the search engines. This also encourages larger corporations, websites, and blogs to keep taking money for these practices. Now... Here's the thing: for these sites to pass authority and trick the search engines, they had to work hard and pay a lot of money to develop the authority themselves, so why not reward them with the ability to pass along the goods to those who can afford it? Also, what about paid, relevant, local directories that pass along page rank, is that necessarily bad? Especially, when the directories are relevant to the user and the service or brand? There are just so many different ways to pass along PR, so why hunt down the advertorials, when they generally are the brands, people, and corporations who worked hard and paid large amounts of money for years to get to where they are. And what about "Guest Blogging"? How much different from a user stand point is "Guest Blogging" than paid advertorials? Listen.. So far, I am a big fan of the #penguin2
update, I just want to cover all the areas.