My traffic and earnings has also decreased, but then I have seen this trend for the last 4 years and it was not nothing new to me. I just got prepared before hand.
The low traffic has affected most of my sites too and earnings have dropped both ways, CTR wise too Things should get better in January for most of the niches though Happy Holidays
As I expected my traffic was half of what it normally is, and so was my Adsense $$, but yesterday was a fab day! Almost double the Adsense $$!!!
about a 30% decrease since christmas day -- christmas day itself was usual. Stat's will depend on niche to some degree...mine are mainly travel sites...
I think things will be back to normal from January 2nd (maybe 3rd) because thats when the official holiday period is over, isn't it?
I think those who is targetting Asia region won't see much drop in Revenue/Traffic but for other Eu and American Countries or Aussie they'll see a big drop in traffic n revenue. I experienced the same here
I have only seen a slight recovering in my stats since Christmas. They are still about 35% of from what they normally are. I hope things get back to normal soon.