It's chat rooms. You can type in them or buy a mike and use voice. Click on the "Forums" tab at the top of this page and go to the main page for all of the forums. Look at the separate panel on the right side of the page. You'll see a list of chat rooms and people's names. Those people are using ventrilo. If you want to join them, click on the link at the bottom of the panel to download ventrilo, then PM Ivy for an account/password.
DRUNKEN WEEKEND VENTRILO CHAT IS NOT AN ACCURATE PORTRAYAL OF NONDRUNK VENTRILO CHAT.
“Everybody has a secret world inside of them. All of the people of the world, I mean everybody. No matter how dull and boring they are on the outside, inside
them they've all got unimaginable, magnificent, wonderful, stupid, amazing worlds. Not just one world. Hundreds of them. Thousands maybe.” -Neil Gaiman