We've started using Zapier to create custom webhooks to connect Unbounce to GoToWebinar. We also have a custom CRM that requires it's own webhook. Since there is only one webhook available per landing page, we have to pick between Zapier or our CRM. Importing ~1,000 contacts manually is very time consuming.
If Unbounce allowed for multiple web hooks per landing page, my life would be so much easier.
Update from Unbounce Product Team (07/12/2016)