I have started an Adwords campaign for one of my sites and I got 12 clicks, but I've checked my site in my Google Analytics account and there are 12 clicks from Google. And when I click on AdWords, there is 0 traffic. And when I view All Traffic Sources, there are 12 clicks from: google / organic. I wonder how is this possible? Why Google Analytics doesn't track my Adwords clicks?
That's the pain with Adwords & GA... Hits show as Google/organic, even though they are not. Go to your Adwords account and enable automatic tagging for GA, then GA will show Adwords traffic. But... It won't show the keywords then. Unless you link Adwords & GA accounts. You can do this in Adwords.