Forum Moderators: martinibuster
I didn't think those little differences could make such a big impact on my eCPM.
But they do, don't they?
5% CTR and a 30 cent EPC means an eCPM of $15.00.
4% CTR and a 25 cent EPC means an eCPM of $10.00.
Lose one percent of your CTR (which more accurately is a 20% drop) and 5 cents off your EPC, and there you go--your eCPM drops by a third.
eCPM is useful for comparison purposes but if you want to see what visitors are doing, look at CTR and EPC.
I think advertisers are starting to realize they dont have to pay $2 a click for their ad. Yes it may not appear at the top but they still get some traffic.
In another thread, someone pointed out that advertisers have had the ability to bid separately for search and content ads since some time in January, so that could be a factor (at least for those who have complained about dropping EPC/eCPM).
It would be a mistake to assume that PPC bids are trending downwards in general, however. In fact, there was recently a thread in the Supporters Forum in which most of the participants indicated that the trend was toward higher bids.