If they don't work in your situation, you need to purchase one that does. This may mean getting a microphone that can pick up the voices of a small group without all the background noise that a small group can generate. Lighting can be key to getting good video. The elimination of background noise can be key to getting good audio. Pay as much attention to your production environment as you would to choosing your equipment.
Forgiveness is divine.
Finally, everyone needs to remember that this is new technology. It will rarely result in perfect audio or video. When used correctly, it should result in better communication. That is what it is all about.