Does anyone use iframes with adsense?

[azn romeo 4u]

I just started using them on one of my sites. Page loads a lot faster. But sometimes I see some blank ads T_T However, compared to when I last used them...about 2 or 3 years ago, they ads are more targetted now, even in the iframes.

I decided to use them, because I notice a tiny slow down in terms of page load especially when using firefox.

Do you guys seen more, less, or the same earnings with earnings when using iframes?

[bumpski]

Many years ago 2004-2005 this worked very well! But.....

Google introduced a new feature and broke IFrames probably intentionally. With IFrames its easier to trick Adsense.

Adsense seems to determine a general overall topic for any site. When you serve ads in IFrames the best Adsense will do is use this general topic. You won't get ad topics highly targeted to a page's content.

You're right about IFrames, they're wonderful, allowing the ads to render totally asynchronously. But the targeting will be mediocre. What can help is putting the Adsense code at the very end of the page and then use positioning to place the ads where you want them. (Put in DIVS to reserve space for the ads.) This lets your content render first while waiting (interminably) for the Adsense ads to trickle in.

If you have a very small site it may not matter. In fact overall looking at all the Google Tools and metrics these days; Google appears to love small highly targeted sites rather than one big domain. In the distant past their guidelines leaned toward the one big site. What Google has wanted has been a moving (in fact dynamic) target.