On the homepage, click on big blue button
Once you navigated to the app page, click on connect link or press CTRL + I. A new dialog will pop up, prompting you for connection information. After you filled in the info, press on connect and you will join the chatroom.
Yes, chatroom allows for embedding youtube videos. Once you're logged in, in the bottom right corner click youtube icon, insert youtube link and click send.
Yes, chatroom supports sending images. Once you're logged in, in the bottom right corner click an image icon, insert image link and click send.
Yes, hover over the message you sent, and on the right top corner you will see options available for the message.
Yes, by writing the command like this: /w @username message. Make sure to click on the user list in order to tag the user you want to send PM to.
Yes, look in the online users list, and simply click on the user you wish to tag.
Yes, hover over the user in online users list, and click on the "Block username" link to block the user.
In chat options, you can turn on profanity filter.