eCPM is very likely to be affected by the traffic your website receives. You just can’t simply compare your eCPM now and few years before because the traffic of your website would have significantly grown by now.
If you tend to receive more traffic form North America over Asia, then your more likely to get higher eCPM . If you ask me why? The answer is simple – Generally, cost per click is driven by the purchasing power of the advertiser in any given country. An advertiser of New York spends more on his advertising in comparison with an advertiser from India.
In the next part, lets look at one question that always taunts the AdSense publishers – What is the ideal or good eCPM ?