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I am confident that Google, a multi-national company with some very bright talent, is able to hire very good people on any continent. I expect that they have training processes in place that ensure a consistent quality regardless of the location. I do not believe that people in the X office are better or worse than people in the Y office.
I'm not a big fan of Google, but I strongly believe that they are fully capable of managing this.
So, the real question here is - what happened to you that makes you think that (a) your ad was reviewed by people in Dublin, and (b) that this is a problem. Or is your problem of generic nature with the Irish?
A Because the world keeps turning and the CA isn't always online or can handle the workload. Your ads are also look at by the India editors at certain times if that is any comfort for you. (among others)
What have you got against little green people looking at your ads anyway? ;)