Best Practices for Hidden Fields in Forms
Is there a resource for marketers on the best practices for form hidden fields?
I am the marketo lead at a growing company (just raised series D) and want to start collecting more attribution information as our marketing campaigns grow more robust.
We currently capture the basic information via hidden fields:
utm_source
utm_medium
utm_term
utm_name (campaign name NEW)
contact us original referral URL (NEW)
But now are building out new non marketo web landing pages and are running various google display and search campaigns, all with marketo forms. There's lots of varied information out there in different forums, so hoping for a reference guide or two for the fields we should be capturing, as well as an understanding of how the cookie hidden field operates.
Like I said, we're a growing company so we're a small team, but we do have a developer and digital marketing lead who I can lean on for deeper understanding. I am the lead on Marketo.
Any suggestions?