Google AdWords Tips | Official Improvements
The beauty of online marketing is the speed and ease of testing ads. There’s no real reason to leave any idea untested; if it is terrible you’ll know soon and with minimal damage, and if it’s terrific you can quickly implement it on a wide scale.
The results of one such test here fell into the "terrific" category.
As you can see, the winning ad tells customers immediately that they’re dealing with the official site.
Is this what did the trick?
I have no idea because the difference between the ads is too great, but I bet it contributed.
So the moral here is to spend time thinking of every possible angle you could present your product/service/story from and then systematically test which get the best results. Somewhere in there you’re bound to find an 80% improvement…
Or you can let us fast track you with AdWords System Exposed.

One of the great things about advertising with google is how quickly you can test your ad’s performance. Unlike some search engines google tracking is very quick and you can quickly decided whether to ditch an ad, revamp it or do a new one.