Promoting Blog Posts Via Paid Methods
I would think this could be a viable strategy for new blogs looking to gain exposure, so long as the content was above par.
A succesful ad campaign may be relative, but what I would look for is:
Creating Brand Awareness
Email Subscribers
Social Followers
Blog/RSS Followers
Comments to show social proof
Other sites creating natural backlinks
"Action is the real measure of intelligence." - Napoleon Hill