MicrostockGroup

I try to follow the results displayed to the right of the screen.  The Big 6 results are informative as are the smaller numbers  below ... Up and Coming and New Sites/Low Earners.  My question is about the Low Earners list.  How does an agency break into the listing?  Moodboard, Zymmetrical, Panther, Scanstock, Cutcaster, etc., have no numbers.  At what point will they break into the Earnings Rating?

Thanks,
Warren