Adsense placement-targeted ads
When Google announced that Adsense is going to allow placement-targeted ads, I believe most of the publishers were very happy about that and suggested that placement-targeted ads going to give better CTR and CPM, as advertisers will be fighting to target certain sites. I didn’t check the performance until recently, and I found that placement-targeted ads’ performance is only half of contextual ads(for MYB), what a surprise.
After some thoughts, I found out that advertisers actually tried to exploit cheap alternatives to advertise in certain sites. For example if MYB serve both in-house contextual ads as well as Adsense, advertisers may try to bid at a lower price in Adsense and hopefully can gain the same level of exposure, clicks, etc in MYB
I decided to review all the ads and monitor the performance and will update in my blog soon.
How to check Adsense revenue from placement-targeted ads and contextual ads :
1. Go to Reports, then Advanced Reports
2. Choose your desired date range, say last 7 days
3. Select show data by : Individual Ad
4. Select the checkbox : Show data by targeting type – contextual or placement
5. Select radio button : Show Aggregate data
6. Display report
The report will then show results for both placement-targeted ads and contextual ads, from here you can decide whether to block some of the sites to increase your revenue.
How to allow/block placement-targeted ads :
1. Activate Ad Review Center under Adsense Setup
2. Review all the allowed sites(all sites are allowed by default)
*the list will take a few minutes to appear
3. Choose to allow future ads automatically or hold it for 24 hours
Hope this help 
