I'd like to suggest the ability to create custom tracking links in Marketo for referencing who (known and unknown visitors) clicked on a given link (i.e. one possibly attached to a QR code at a tradeshow or used for a banner ad on an online advertisement). This would provide necessary visibility into the effectiveness of specific marketing channels and provide additional insight into which leads are engaging with a given piece of content from one place. Pardot/AE provides this capability as a custom redirect. I think Marketo should provide this same sort of functionality.
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