It increases your CTR but I have seen member comments here about decrease in CPM after the changes. I noticed high CTR after I disabled the feature.
For me it has been over a day and it is still there, anyone else have to wait that long? Great tip by the way, now if I can get it to work....
I've tried it (these 2 days), but until now I don't see many difference. Maybe my site traffic is low and it can't generated more. Anyway, It's blend nicely on my site right now.
site targeting will only send you cpm ads, and they typically do not pay well at all... so you could be site-targeted by an advertiser, but never see his cpm ads, because they are competing with standard adsense cpc ads.
Sorry to bring this up again, but now 3 days later and it still is not working for me, the option is off for sure in the Adsense account, I tried contacting Google, have not heard back yet. Am I the ony one who can't turn off the "Advertise on this site"?