What's the impact of adding extra countries and/or keywords?

My questions are good as always - promise!

[bigdealioo]

Suppose you have a campaign that's performing well. It has one adgroup. It runs for one country. So that adgroup has a good QS that you don't wanna screw up. Now for the good stuff:

1) If you add a new country to the campaign.. is that gonna reset/mess up the adgroup's QS?
2) If you add a new keyword to the adgroup.. is that gonna reset/mess up the adgroup's QS?
3) If you add a new keyword to the adgroup.. will that subject the ads in the adgroup to a new review/approval procedure by the editors?

Thanks!

[Pengi]

I don't know about "messing up the QS", but I have noticed that making changes to AdGroups can adversely affect performance on Content.

I deleted all my keywords that had never recorded an impression - it took a couple of weeks for my site to recover. The theory suggested (by ASA I believe) at the time, was that removing many keywords may have changes the "theme" of my site and put it back into review.

[bigdealioo]

sorry, but that doesn't answer it.

[fischermx]

In my opinion and testing, none of those has any direct relation to QS.
However, they will be related, for example, if as consecuense, you target a country or language in which no one clicks your ad bringing very low CTR.

[barrymossel]

and as always, no-one, except some secret lab monkeys at Google, knows for sure... :S