reBlog from socialmediatoday.com:

I found this fascinating quote today:

 

“….. One leading argument has been that some Twitter applications on mobile devices load pages within the application, rather than using an external browser, and so aren’t getting registered by Google Analytics. Also, some mobile browsers might not process JavaScript. I could see at least four iPhone-based requests like this. But there were plenty of other requests that appear to be from full-fledged desktop-based browsers. Why weren’t they showing up?

One clue is that of the 34 requests, only 5 of them contained “referrer” data, information that some browsers pass on that indicate how they found the page in the first place. For Google Analytics (or ANY analytics program) to properly indicate how much traffic a particular site is driving, it needs as much referrer data as it can get.”

socialmediatoday.com, Jul 2009

 

You should read the whole article.