We see a frequent complaint, in AdSense Help Forum: Blogger, YouTube, Partner sites.
I installed ads to my blog - but the ads are not showing. It has been several months already - and I have received no feedback, from AdSense.
Too frequently, the blogs in question turn out to be computer / tech blogs - many offering free downloads of various commercial products.
Many computer / tech blogs do not get AdSense ads, even if approved - for several good reasons.
- Too many blogs, applying for AdSense, are tech blogs.
- Too many tech blogs copy content from other blogs and websites.
- Too many tech blogs offer downloads, and provide possible copyright violations.
Too many blogs, applying for AdSense, are tech blogs.
There's no market for more tech blogs, because there are too many tech blogs, already.
AdSense puts ads on blogs and websites that are relevant to the product being advertised. Relevant blogs and websites bring relevant traffic - and customers - to the ads displayed, and sell more product.
To get ads, a blog needs informative, interesting, and unique content. With the marketplace for tech blogs saturated, it is unlikely that any relevant blog will have content that is significantly more informative, interesting, and unique than the general population.
Even if approved to host ads, that does not guarantee that any blog will show ads at any time - or on all pages. Ads are placed when available, on the best blogs to host them.
Too many tech blogs copy content from other blogs and websites.
Content copied from other blogs and websites produces little traffic - and sells less product.
AdSense is going to put ads on blogs and websites with unique content, because blogs and websites with unique content get more traffic. And blogs and websites with more traffic sell more product.
Too many tech blogs offer downloads, and provide possible copyright violations.
AdSense won't put ads on blogs and websites which present possible DMCA violations. There is no system, right now, to identify what content, offered for download, is being offered by the content producer - so downloadable content, in general, is suspicious.
If AdSense was to place ads on a blog which offers downloads as significant portions of blog content, they would be placing Google in potential legal jeopardy, for content which is a problem with DMCA action.
The bottom line.
In short, if you publish a computer / tech blog, you may have to come up with an imaginative twist to your content, if you hope to host AdSense content.
Some owners of #Blogger blogs which deal with computer / technical subjects don't understand why their blogs - even having been approved for #AdSense ads - don't show ad content. They don't understand that ads are not always available, for all approved blogs.