How to Create a Google Campaign Link
Any time we represent anything with a URL we should be using a Google Campaign Link to better identify our traffic in Google Analytics. These links are what make it possible to accurately measure our response and report on our efforts to the programs. It is key in helping us determine our ROI and whether a particular medium is worth our investment.
The following are the directions you need to create a campaign link at https://ga-dev-tools.appspot.com/campaign-url-builder/
Instructions
In all campaign links, all text should be lowercase with no punctuation. Spaces are fine.
Do not shorten links using Bitly when they are to be placed in Constant Contact or Loomly.
When creating a campaign link for a QR code please list the source as “qr” and the medium as wherever the qr is being placed.