I have recommendations and reviews for webcams listed in my Equipment Recommendations Blog

A webcam is not essential for Breeze, but it is a quick and easy way to install a camera and microphone (most have them built-in). Besides, it's fun to be approaching the Jetson lifestyle in a fairly easy way. 

If you are "meeting" with just one other person, using video works well. It also works well if you are the only presenter with a camera with dozens of participants watching. But if you are planning to have several folks online using cameras, think again. That's a lot of bandwidth and you are likely to see things slow down in your meeting. Remember the Breeze server is in Davis so everything you do on Breeze travels to and from Davis. The further away you are, the more likely there will be congestion on the parts of the Internet Highway your signal is traveling. So the Jetson's thing is not quite here, yet.