Marketo Landing Page Tracking and Salesforce

Hello all,

Since I have been using Marketo for the past 6 years in every company I have been working in order to track leads who click on a particular landing page and fill up a form in the email CTA we use  the webpage address followed by the SF ID - www.xxx.co.uk?sdfcid=768657900. Then in marketo we create a smart list with "Fills Out Form" trigger

Form name is xxxx

webpage is xxx

Query string contains =sfdcid7658970

See attachment.

I was wondering since I have been using this method for ages I believe there are better and new way to track in Marketo and was wondering how do you track leads in a similar scenario?

Thanks,

Fab