I remember awhile ago I stumbled on an Adwords tool that was for analyzing ads, and of course I didn't bookmark it.
Basically the tool would analyze all 4 lines in an Adwords ad (Headline - Line 1 - Line 2 - Display URL) and give you some data as to which parts of the ad were strong, so you can mix an match the best elements into a really good ad.
I am building a massive campaign for a client, and I think it would be pretty useful. Does anybody know of this tool? ...or any tools that do something similar?

I am building a massive campaign for a client, and I think it would be pretty useful. Does anybody know of this tool? ...or any tools that do something similar?