The editors response is that they couldn't be in an adgroup that had a dynamic title because then the ad would fail the spelling guideline if one of those terms would show.
But before it, I have some doubts need to be cleared. The syntax is {keyword:backup}, in which "keyword" is the search term typed by searcher or the term I input in adwords keyword box?
In that dynamic title thread, some said it's the search term used by searcher. If the term is less than 25 characters, it will be used as the title. if it's over 25 characters, the "backup" title will be shown (and will be limited to 15 characters).
In the same thread, msg#35 said "keyword" was the term I entered in adwords. And the example in msg#34 seemed to support the claim. To make things clearer, I copy part of the message below:
Targeted keywords = apple banana cherry
Headline definition = {KeyWord:Fruits}Search query = apple banana cherry
-> Resulting headline = Apple Banana CherrySearch query = cherry apple banana
-> Resulting headline = Apple Banana Cherrysearch query = apple banana cherry kiwi pineapple
-> resulting headline = Apple Banana Cherry
If "keyword" is the search term, the 3rd ad title should be "Fruits". How come still the targeted keyword?
Can anybody help to explain?