Looking at the interstitial ad report the earnings has not even reached 1 cent. For this reason I have disabled the advertisement until global CPM rates improve. US visitors represent about 33.4% of traffic of late.
The CPM rates vary by traffic pattern and many countries earn 5% of a US visitor. A Russian visitor earns 2% of the US visitor but games prices are also much lower there reflecting the economy there. Rates also vary from mobile and desktop users for some markets. Latin america pays slightly more but again the economy varies from nation to nation substantially. There is not even a published rate for Chinese visitors which lately are 2% of the traffic here.
Ad blocking has really badly trashed the advertising industry. There are still ads for adblock on YouTube suggesting Google is still stupid. Google slashed earning for content. The security tool simply offers a black screen to adblock users.
Google’s search is an inverted index and since about 2001 or so this is now able to be fit into main memory which makes the search faster. The index is partitioned by document IDs into many pieces called shards. Each shard is replicated onto multiple servers.
In June 2010, Google rolled out a next-generation indexing and serving system called “Caffeine” which can continuously crawl and update the search index. Previously, Google updated its search index in batches using a series of MapReduce jobs. The index was separated into several layers, some of which were updated faster than the others, and the main layer wouldn’t be updated for as long as two weeks.
The ad used is a native interstitial type that appears after the page is rendered. It can be closed easily as it is not designed to do anything more than show the advertisement. The embedded Amazon ads are also native ads that blend into the posts. The Amazon ads are contextual based on the content of the post and the interests of the visitor.
The coffee ad has performed poorly which suggests many here cannot even afford to spring for a jar of coffee. Instant coffee has risen in price over the last few years but coffee futures are moving sideways and energy costs are also moving sideways. This suggests that pricing is driven more by profiteering than actual cost. Urban retail prices actually vary widely.
CPM rates at 2 cents per thousand just do not earn anything worth my while. Back when Amazon was running CPM ads, I was able to earn enough to drink lots of coffee. Sadly they abandoned the program after operating it for close to a year. Amazon rates were much higher than rates are now. I recall rates of $1 per thousand which put lots of coffee in my cup.