Tiny Chat is the latest addition to  The Best Online Tools For Real-Time Collaboration .

It lets you, without registering, immediately create a private chatroom.  You email the url to others, who can then participate in real time.

There are other similar tools already on the two “The Best..” lists, including ones that allow you to participate with audio and/or video messages.  But Tiny Chat deserves to be on the lists just because of its ease of use.

Thanks to Read Write Web for the tip.