Hi Ken,
My challenge is:
Manual input of webinar registrations into our CRM Salesforce.com is a painful process. This creates many challenges including how do we nurture webinar registrant prospects in real time (rather than in batch), using our own email templates rather than webinar vendors, recognizing conversions to webinar registrations from email campaigns to our lead database for performance analytics, webinar registration form field flexibility, etc.

What I'd like to do is to handle all of registration within our own website  to solve the above problems and then synchronize with a webinar system.
I am considering Adobe connect due to their persistent meeting rooms...my question is once the registration is happened through our website and we send them a persistent meeting info, how would we recognize which of the registrants have attended the webinar through Adobe Connect....Are the attendees required to enter their email addresses or they have unique UID in Adobe which helps us recognize it?

Any/all help & guidance is much appreciated and thanks for writing a valuable blog.