Marketo used a form for their Demand Gen Success Kit landing page that has a disambiguation step for the company. I put in the friendly name of my company and before completing the submission I chose the best of three entries that already existed in their system. Is this something I can get through Marketo today or am I jealous of the dog food they are eating that isn't ready for public consumption? I want. Now.
We use Reachforce's smartforms for this functionality. They are part of the Launchpoint ecosystem and you can find integration details at http://launchpoint.marketo.com/reachforce/721-smartforms-b2b-marketing-data-collection