What does this mean and how does it efFect our earnings is it good to have a higher eCPM or lower ecpm is better.
Higher is better. It's simply a way to measure your average earnings per 1000 ad impressions. If you show 1000 ads and earn $5, then your eCPM is $5. If you show 2000 ads and earn $5, then your eCPM is $2.50. If you show 100 ads and earn $5, then your eCPM is $50. Higher is always better.