Or perhaps it would be better to say: Are there services that you just can't sensibly optimise for? Ok; here's the scenario - we offer a service where we review peoples Google Adwords campaigns; produce a report and then have a telephone chat with the client to go over the report once they've had chance to review it. Now the obvious term for this service would be 'Google Adwords Review' - however, my guess is that people searching for this are actually looking for reviews of Google Adwords (i.e. tell me about Google Adwords). This is one that I am still working on trying to find what keywords would be used by people who could benefit from our service. Eg: what would they actually be 'searching' for? Even using the Adwords Keyword Tool hasn't given me any insight as yet. Any brainwaves here? Also, have any of you had your 'Search Term Block' moments? If so, what were they?