I just found that I have some conflicting keywords in the same adgroup:
TN widgets
tn widgets
Tn widgets
I thought this was impossible to happen because if I accidently add a new keyword that is already being used, it recognizes it and does nothing. But apparently, this is not the case if any capitalization is used.
Adwords support has "Don't worry about capitalization, our system is not case-sensitive." But I couldn't find any additional instructions.
I have clicks and impressions for each of these keywords.
I really don't want to delete the keywords with capitalization because they have established ctr's. But if adwords is not case-sensitve, it doesn't really serve a purpose to keep them there. I have to do a little more data crunching when working with my reports, however.
Has anyone else come across this?
I've been wondering the same thing actually... (Although I'm not sure I have documented proof like OP does)
TN widgets
tn widgets
Tn widgets
This is my observation:
All of the above phrase keywords are the same. When you add these phrases into your list, the predicted clicks/day are not the same. One of these phrases will have a value on clicks/day and an ad position while the others shows <0.1 clicks/day and their ad position of 1. This means one of them is OK (one with a value on clicks/day and ad position) while the remainders are overlaped.
The capital (TN) seems to be preferred over (Tn) and (tn). This is a reason why the capital phrase gave the best result as you indicated
I really don't want to delete the keywords with capitalization because they have established ctr's.
ginagina
Adwords Advisor - can you comment on this one?
Missed this one till now, sorry.
I'll pass the details by some tech folks, and post again if I'm able to learn more.
AWA
To get to the bottom line first, there are no inherent problems in having the same keyword with various combinations of U&lc (UPPER & lower case). Doing this will not effect ad delivery, nor is there a risk in deleting all but one of the options.
If one were to delete any variations, the obvious choice would be to keep the one with the highest CTR - although I suspect the CTR of the 'survivor' would evolve to reflect the average CTR of the variations.
Now, here is the part of my response in which I first remind everyone that I am not a particularly technical person. ;)
The 'why' part of the question evolves to very nitty gritty details of the algo and evidently may have a different answer depending on if the keywords were all entered at the same time, or separately over time. But in essence the system picks a default to use, and the default can change over time.
AWA
