Kazoome is a website where groups can come together to share photos, watch videos, browse the web, and listen to music interactively, in real-time.
You can use Kazoome to, amongst many things:
Groups meet up in ‘rooms’ where each have avatars that allow both text chat and other forms of response an interaction like facial expressions, sounds and voting.
There’s no download and no registration.
Note: The service is still in development and due to be available for private beta soon.