Barney jones from Google UK was there talking about how google does their broad match.
It seems that the CTR on broad match does not really mean that.
lets say you have wigets on broad match.
google calculates you ranking score by max CPC x CTR
a user searches for small wigets, which in turn triggers your wigets broad match ad.
behind the scenes google is calculating your CTR not on your broad match CTR, but on the Exact match of that searched phrase within your broad match campaign.
so it seems even though that you are doing broad match, you are actually creating an exact match ctr within that campaign.
Has anyone else heard about this, or is this old news to most?
Briggidere
1) the advertiser wants to RESTRICT or tightly control the showing of ads - and therefore uses no broadmatches at all
2) the advertiser wants to track which keywords are triggering the ads.
the main reason i use exact and phrase matches is because i thought it would improve CTR for those keywords/keyphrases and then i would get better ad positioning in those cases.
if what you say is correct, and the "hidden keyword match" behind the broadmatch is recorded and tracked by google, then one of the primary reasons to use exact/phrase matches is out the window.
would be very interested to get corroboration on this.