The following blog posts provide good examples of content, sources/citations, graphs and images, structure, or several of the above factors:
From the blog U Drink, U Drive, U Lose: Putting an end to drunk driving .
Highlighted for: content, sources/citations, structure
From the blog Lean on the Sunscreen 
Highlighted for: content, sources/citations
From the blog Body Party: Your body is cool, let’s talk about it .
Highlighted for: content, sources/citations, effective casual tone supported by cited resources
Can Your Emotional Issues Really Be Solved By Several Laps Around the Neighborhood? Most Likely Not, But Exercising Regularly May Help 
From the blog The Thirty Minute Cure: Promoting Exercise for Depression 
Highlighted for: content, structure, courses/citations, opening anecdote supported by cited resources