Does anyone else get wild swings in Content volume?

different ad groups on different days

[grigoroo]

Today it was workout clothing that went 100 times normal content network volume. Other days it has been other terms. G says it's just some content network content, but did I miss out on a big news item about workout clothing? Why is Nike so often in the news somewhere?

[limitup]

You sure it's not BS fraud clicks? I always knew there were bogus clicks coming from a lot of "content" sites but until we started using a system to track our content site conversions I had no idea just how much $$$ we were wasting ...

[grigoroo]

It's not a matter of clicks. I'm seeing a massive increase in impressions that is not matched in terms of clicks. Sometimes clicks do increase marginally, but not in relative terms. A slow content day might generate 0.1% CTR, but when the content impressions spike the CTR drops drastically.