Forum Moderators: martinibuster
1) Brand new page. If Google can't make a quick decision about the page and what ads to show, PSA's are shown.
2) Google most likely hasn't done a full page crawl and analysis. Ads pop up related to what I'm guessing is what Google "thinks" is the theme of the site, because ads for other "dominant" site pages appear on the new page; even if those themes are unrelated to the new page.
3) Google finally does a full crawl and good targeted ads appear.
It seems to me that that Google's mediabot is an onion, it sometimes makes you cry (joke). Actually what I mean is that it appears to be rule/inference based and has different stages for different phases of the ad selection process. Each stage getting progressively more complex.
What is most interesting is phase 2 with the "dominant" theme ads appearing. This indicates that Google is doing a site-wide semantic analysis of your web site and has a summary record for it. The implications of this are daunting.
How about the rest of you? What interesting ad selection changes have you seen on new pages?
Thanks.
I posted a wildly off-topic (for the theme of my site) page, and observed instantaneous, spot-on targeting the first time I loaded it (within seconds of posting it). That took me by surprise since several pages remained stubbornly mistargeted after being around since before AdSense was.
I have noticed that the above-mentioned poorly-targeted page got "fixed" sometime (I didn't do a thing to it, honest) and is now showing very accurate ads.
I used to see "themed" ads, but recently I think there are far fewer of them.
