I've been using adsense for quite awhile now and I've always used channels to track where the traffic is comming from. Recently I have been seeing a lot of impression with no channels associated with them... anyone know what this is about? Could someone be using my adsense ID by accident?
Someone could be using your Adsense ID but that doesnt seem likely. Have you made changes to one of your sites recently and perhaps affected the adsense code? Try to think back, whenever i encounter problems like this, it is always some small stupid mistake i made.
I went through my logs today and saw where my traffic was going - after looking at those pages I still find nothing wrong there, the channels are still listed on the pages. Usually I dont have less than 10 active channels per day but recently it's either been showing either none or 1. I've also searched all of my code and even on my test pages I use a test channel. I'm guessing the problem is on googles side.