How to Utilize the "Blue Dots" on ZIllow?

[Alex Huang]

I'm looking for a better understanding or strategy with regards to the 'blue dots' ('Potential Listings') on Zillow searches.

Oftentimes they indicate pre-foreclosure properties, but they aren't yet available on the market. 

Is there any viable strategy or information you can utilize through these blue dots or are they largely meaningless when it comes to finding potential properties, etc?