Ok guys fascinating stuff, there is a double exp weekend, this weekend! So get on, and hit those prestiges!
Here is a link just in case you don't believe me: Call of Duty Community: Space: Call of Duty: Black Ops 2
It will last from 10 a.m, 14th December (PST) - 10 a.m, 17th December (PST). For my fellow Australia this is 5 a.m, 15th December - 5 a.m, 18th December.
If you guys are unsure what time it will start/end for your timezone, here is a timezone calculator: Time Zone Converter