We have tried testing this feature but attendee option did not have option to broadcast their webcam.
This feature will help when an attendee is asking a question
Attendees can not share their webcam in GoToWebinar. The Organizer would have to promote an attendee to be a Panelist, in order to show their webcam.
You can have up to six webcams showing at a time.
In GoToMeeting, Attendees can share their webcam, and you can have 25 cameras active at the same time.
Note to LogMeIn:
On those two pages I referenced, it is not obvious which page goes with which product unless you read the fine print in the URL. Could you place a GoToMeeting or GoToWebinar headline/graphic at the top of each page?