I'm spending a little time on exploring Drupal 8 for our corporate website redesign. While doing this, I'm hoping to change how one of the Marketo forms gets its info.
Currently, when someone requests a white paper, we pass information in the URL string (Get)... Then the Marketo form can pull that information into a couple hidden fields. This has occasionally been problematic - and Google isn't indexing those pages with the passed variables. This leads to broken forms when people get there via Google. (Plus, we're starting to use more UTM codes. This is making for one nasty-long URL.)