I have checked for my ads several times and they are indeed showing on google and yahoo. They've been showing up all day for various search terms I tested. But BOTH do not show but a single impression in the campaign managers! Google Analytics shows zero increase in traffic (from about 15/day average).
This blows my mind how the ads can be showing up for me, but leave zero trace of evidence of appearing anywhere else. Another strange thing is that the adwords campaign manager says that the ads ARE being displayed, when clearly, it is not registering impressions, and people aren't clicking on any ads, existent or not.
Anyone have a clue what's happening?
There is no way that two separate entities like Google and Yahoo act in the same strange way.
I would check the display time frame setting when you log into any of the two accounts.
Other than that, have you tried running reports from within your accounts, for the days when you actually saw your ads showing?