It's not a drop though .. If you read, it's saying the gasoline index (alone) dropped nearly 8% which resulted in a net-null even though ALL of the other indexes continued to inflate...
This isn't great.. And on top of it look at the number 1 comment here.. People are making concerted efforts to reign-in spending .. Which is excellent financial discipline.. but it's potentially very dangerous for this type of economy if everyone stops spending into this 'easing'