Saturday I had my first profitable day with AM. Ran ads with a few networks (adwords, ysm, adcenter, adbrite) and had a really great conversion rate. Was something like 30%, and closer to 50% on some of the more targeted keywords. Then Sunday happened. NO conversions. Same ads, same offer, about the same ctr etc, but not a single conversion. I get home and check again tonight, and once again zero conversions today. Is that normal? Does this happen often? I just didn't think it would be that volatile.