✔ 最佳答案
BWDP provides this type of code that allows webmasters to have chat rooms on their site. The rooms they provide don't require sign-up, it's optional. They provide a code that you copy and paste in the page where you want the chat rooms to be. Once you place the code on your site, anybody who visits the page where the room is can enter and participate in the conversation. Of course the service is free and there are no ads. They don't provide video chat though, only text chat.
You can have a better idea of what their English chat rooms are like by reading this
http://freechatrooms.blogspot.com/2008/04/free-english-chat-rooms.html
The ones you'll have on your site will be similar to the ones described in the previous article. I find their rooms very simple and easy to use.