Yesterday was spectacular - Today not even 1 conversion!

what was happening yesterday?

[add more milk]

Both my Yahoo and Google PPC ads were doing spectacularly yesterday. From Yahoo, we got 26 conversions, compared to only 3 or 5 normally. And from Google, we got a whopping 75 conversions, compared to only 25 normally.

But today, it's the complete opposite for Yahoo. Not even a single conversion!

What's happening? Or should I say what was happening yesterday? What made yesterday so great? The CTR and Conversion Rates on Google and Yahoo were both better yesterday. But we didn't do anything differently. Has anyone experienced something similar?

Thanks.

[Tazzam]

When you find out let me know. I saw the same results.