there are general techniques for "seeding" search terms.
Obviously the best approach is to have someone manually do it who understands the space to initially seed it. However, its hard to get a really nice long tail of keywords that way.
The way to do something like this in an automated fashion would be to just find the competitor products and use something like SEM Rush to deduce what keywords they're hitting, then use a keyword expansion tool to expand that list.
After the initial setup, you should always be spending some of your adspend on expanding your keyword list. for example: 80% of your budget goes towards "exploit", which tries to perform as optimally as possible, and 20% of your budget goes towards "explore", which is basically letting Google and users give you hints about what words might be profitable.
To do this, create another campaign with broad match keywords (google matches a bunch of crap to these). Your script should regularly take the queries that match the broad match terms, then either:
(1) negative match it so you never see it again, for bad keywords
(2) exact or phrase match it to be managed by the CPC bid optimization method described in the post.
Obviously the best approach is to have someone manually do it who understands the space to initially seed it. However, its hard to get a really nice long tail of keywords that way.
The way to do something like this in an automated fashion would be to just find the competitor products and use something like SEM Rush to deduce what keywords they're hitting, then use a keyword expansion tool to expand that list.
After the initial setup, you should always be spending some of your adspend on expanding your keyword list. for example: 80% of your budget goes towards "exploit", which tries to perform as optimally as possible, and 20% of your budget goes towards "explore", which is basically letting Google and users give you hints about what words might be profitable.
To do this, create another campaign with broad match keywords (google matches a bunch of crap to these). Your script should regularly take the queries that match the broad match terms, then either:
(1) negative match it so you never see it again, for bad keywords
(2) exact or phrase match it to be managed by the CPC bid optimization method described in the post.
http://www.wordstream.com/products for example does some of this (and google itself will give you keyword recommendations)