The All-Star badge is given to top contributors of the Zillow community. These are active Zillow users who share their real estate knowledge and help others by contributing high-quality content. The more and better the contributions, the more likely an award will be granted. Users' contributions can be seen in their profiles.
Example: http://www.zillow.com/homedetails/1544-E-Oakcliff-St-Fayetteville-AR-72703/72873111_zp ... - 1 Answer
The original sq ft. was 1500+, we have added on 400+. The zestimates for the houses next door ... - 3 Answers