Seems like every time there's a national holiday or occasion in US click costs sky rocket, am up minimum 50% across 5 countries, on better than usual ctr's.
Anyone else going through same hell?
Wow. It just happened to me as hell. CTR improves by 0.85% and CPC increases by almost $0.12 the moment the clock has hit 12 and the new day begins :S This is weird 