The javascript for embedding forms in HTML is great, but the lack of 'pre-fill form' and 'progressive profiling' on non-marketo landing page is SO disappointing.
We're using this for our email preference center, and it's making it REALLY difficult for our users to identify what they're already subscribed to. Please enable pre-fill!
Progressive Profiling. Many people believe ProgPro doesn't work on embedded forms because Prefill doesn't. But ProgPro stil works, because the values of the fields don't need to be transmitted to the browser, just the fact that there is a value.
If you're interested in the workaround, feel free to join the list at http://markivo.com.