The ability to conduct video and audio chatting. 

The availability of the app on both iPhone and Android devices. 

The option to share text messages, images, videos, and audio media. 

All of the above features are commonly associated with these apps.

FaceTime allows for group chatting, while other apps are limited to one-on-one conversations.

FaceTime uses the device's front-facing camera for video chat, a feature not commonly found in other apps.

FaceTime is only available on Apple devices, while other apps work across platforms.

FaceTime provides a searchable chat history, which is not a typical feature of other chat apps.

All of the above 

Chat rooms were hosted on online services like AOL 

Users could choose a chat room from a list of available rooms

Users had to use a screen name to identify themselves to others

The ability to conduct video and audio chatting. 

The availability of the app on both iPhone and Android devices. 

The option to share text messages, images, videos, and audio media. 

All of the above features are commonly associated with these apps.

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