Google Help Center now includes AdWords keyword insertion

[kevingibbons]

Quite surprised they didn't add this sooner to be honest as most people know about keyword insertion these days so makes sense to have an official explanation:

http://blog.seoptimise.com/2007/10/google-adwords-help-centre-adds-keyword.html

[GuyFromChicago]

It's about time. I would guess DKI was one the most widely used / least documented features of the AdWords program.

[Thomas Schulz]

It tends to give higher CTRs, but I am always slightly worried about the relevancy. I use it in some campaigns where competition is fierce.