Very strange problem, I decided to add a campaign ID to my links in Google adwords so I could do something interesting in Google analytics. When I enter the links into a browser, they show up in analytics just fine. However when someone clicks on a link in adwords, they don't show up in analytics. I'm testing this by going to content drilldown and doing a search for "pc00" which is the beginning of every campaign code. I've tested this back and forth a few times. I even tried formatting the link with the Google link builder, but I get the same problem. Anybody had this experience?