I am using @watch for my webinar management software. It is very easy to use, customizable, and integrates with google drive so that you can have all your materials saved in one place. The only thing I dislike about @watch is that sometimes when someone makes a comment it doesn't post right away. You have to refresh the page or go back into the thread and click "refresh" to see if it updated. If you are looking for a good webinar management tool, this is the way to go. It works great! I've been able to track everything from registrations to attendance. And I have access to all of the data from Google Drive as well.