I thought some other MSN AdCenter users might be scratching their heads when their MSN ads were showing one day and not the next.
I started advertising on the MSN Adcenter yesterday, and got approx 45 clicks at .05/each - not bad! However, today the traffic has dropped like a rock, so I called customer support to ask what happened. (It's weird but GREAT to actually talk to someone at a PPC group)
The assistant was very helpful - she said that MSN is "ramping up" the traffic from the AdCenter to make sure they can accurately deliver ads while in beta mode, and for now there will be daily and hourly fluctuations for when AdCenter ads are shown. Hence the absense of traffic this morning.
I sure hope MSN can afford to keep the tech support # open after the beta is over.