I've always found Big Champagne confusing too.
I look at it regularly and AllAccess Advisor and StreetPulse. AllAccess Advisor is particularly interesting as it gives the public's opinion on songs and IW was usually very high up in the top 10 throughout its run contrary to radio's ranking.
Kellie is back at present with TTNCAMM in the top 30 of Big Champagne (she was there sometime last year), see below
LW, TW, Artist, Title, (Index TW), (Index LW), (Index Move), (Downloaders (Cume))
35, 30, Kellie Pickler, Things That Never Cross A, 1.56, 0.288, 1.27, 87,123
Index TW is defined as current week's online popularity based on new searches and songs shared. 100 point scale based on #1 given 100 (Taylor S)
Index LW is defined as last week's version of above
Index Move is defined as difference between the 2 above
Downloaders (Cume) is defined as (Cumulative) Population by market, format, station who have this song.
Still quite confusing, but let's hope she rises.