I started monetizing my YouTube videos with AdSense back in November of 2011 when YouTube opened up the program to more users. At that time they weren't calling us "partners" but over the course of the next few months they started to shift and refer to everyone who had a monetized channel as a partner, even though the newer partners didn't get all of the benefits that the older - more official partners have.

Since I was new to the program I didn't notice any drop in earnings back in January of 2012 but in January of 2013 I did see a drop.

Has anyone else experienced a drop in YouTube earnings when they compare December 2012 and January 2013?