A landing page

This page should be linked to with normal GA campaign parameters, plus ?cid=your_user_ID

View source to see the javascript format

Example URL, cid=blah

http://your-appengine-id.appspot.com/landing-page?cid=blah + utm parameters

....example full click URL with campaign parameters

http://your-appengine-id.appspot.com/landing-page?cid=blah&utm_source=source_me&utm_medium=medium_me&utm_campaign=campaign_me

Click me, view javascript console to see cid passed to GA tracker