netmeg

msg:4546464 | 3:16 pm on Feb 18, 2013 (gmt 0) |
Are you running link units? Those tend to show extra high numbers of unmatched ad requests.
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internetheaven

msg:4546487 | 4:42 pm on Feb 18, 2013 (gmt 0) |
Nope. Just a 300x250 box. Dropped from 3% unmatched over the past several weeks to 59% unmatched from 12th/13th Feb onward.
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netmeg

msg:4546550 | 6:52 pm on Feb 18, 2013 (gmt 0) |
Do you get a lot of mobile traffic? There have been some big changes in AdWords with regards to mobile in the past couple weeks; I can't right off the bat make a connection to your problem, but ... it's a thing.
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avalon37

msg:4546987 | 4:13 am on Feb 20, 2013 (gmt 0) |
On a very high volume traffic site I had been averaging only like 3% unmatched when I was only running Google as an ad network. This morning I added almost all the ad networks and my unmatched % is now close to 10%. I should have listened to everything I already knew about Google and that is whatever a Google employee suggests you do - do the opposite.
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