A Sudden Rise in PSA's

Some high traffic pages suddenly show PSA's

[JCKline]

I was checking some high traffic pages on my site that have dropped in ad impressions and noticed PSA's and "blank" ads (because I opted out of PSA's) showing, yet all other pages show ads as they should. Because of the subject matter (seo tools, webmastering, etc.), I have never seen public service ads before.

Drop in AdWords advertising perhaps? Or something else. Is anyone else seeing this? It would certainly explain my recent drop in revenue. What can I do?

[CenSin]

Then you should provide an alternative if no ads from goog (e.g.: promo to your other topics.)

It help for some of my sites. After I provide alternative, ads are display and targeted.

[JCKline]

@CenSin, thanks. I solved the issue. First I created new ads and replaced the old. This did nothing after waiting 1 half an hour, so I decided to "rename" the two pages and 301 redirect the old pages to the new. As soon as I uploaded the changes to the server, I checked my permanent redirects (all OK) and the ads showed on the "new" pages.

[TamanRoyal]

There is a risk to 301 redirect your page. How about external site already link to that old page, pagerank?