What is the right way to manage large set of keywords?
lets take an example here.
lets say you are selling sports goods like shoes, jump suits and knee pads.
In this case i would create 3 campaigns to start with one each for shoes, jump suits and knee pads.
Inside shoes campaign i will create different adgroups for running shoes, tennis shoes, cricket shoes, football shoes, etc.
In each campaign i will divide diffrent keywords in similar way based on themes and have relevant adcopies to each theme.
Ofcource its very hard to do that manually and it helps if you are good with spreadsheet program where you can write formulas and macros to devide themes and keywords
This is just a start and you will need to work with negative keywords for each campaign and adgroup to prevent cross triggering and keep looking at data to revamp your strategy.
Hope this helps
In addition to what Nik said above, I would like to emphasize on quality keywords rather than going for the quantity. That should be your aim so that you receive quality traffic. I would also encourage you to read this reference on how to organize your account for best results:
My 2 cents!
In addition to great advices above, I would like to add whenever I deal with large number of keywords, first of all I look for mispellings and plurals. I prefer to remove all mispell keywords and plurals. It helps me cut down list of keywords. As Pankaj said, Quality matter not quanlity. Also Initially I like to start with direct keywords and some long term keywords (Although Keyword selection depends on goal of advertising) and slowly and gradually I extend my keywords list. Also I prefer to filter list of keywords according to performance. Pause underperfrming, keep top performing, add new keywords from SQR etc.
Hope that makes some sense!
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