Just starting to play around with Adwords on YouTube. I basically setup the cheapest campaign I could for the vid just to get a feel for things something like 1.33 a day. Everything went as expected for the first couple days then shot up to 20k views and $470 in total cost in a day maybe a day and half. I've read googles explanation on over delivery, but this is crazy. Over delivering something like 15x my monthly budget in a day. Does this hint at potential for my video or just an unavoidable error on googles part or should I be tweaking some Adwords settings?