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The first few days were actually more on target than the ones being displayed now for some reason. The last couple of days has seen CTR drop over half to 0.3%, my guess is due to the ads being less targeted.
A little background, my site is geared towards those interested in 'Product A' and 'Service B'. It is a user contributed site and is browseable by location very similiar to the site of 'altyfc'.
I guess since the first page of each section is constantly changing, Mediapartners-Google bot has indexed an older page. On top of that the ads it is serving for the global level are promoting a specific small country which doesn't make any sense. Those ads should be displayed at the country level.
And a lot of other pages are way off, even if they are static. For example, several pages are displaying wicker basket ads even though these pages do not contain ANY reference to wicker baskets.
I would think it should be displaying non-profit ads if it doesn't know what to serve.
In conclusion, I think Adsense has some serious tweaking that needs to be done to improve the targeting of ads it serves.
Has anyone else encountered such issues?
I think if your site is focused, the default for new pages becomes the type of ad showing up on other already-spidered pages.
I believe you're right. I routinely get AdSense ads about rail travel on my home page (where rail travel is listed as a topic), and those same ads show up on other pages about obscure topics that have nothing to do with rail travel.
IMHO, it would be nice if a site owner could specify a default default keywords at the domain level. It would also be helpful if a site owner could specify the site's category (e.g., "europe travel") to prevent the display of off-topic ads (such as "Hollywood sightseeing tours" on a page about tours and "ATM equipment and supplies" in an article about using automated teller machines in Europe).