They are probably using chat or skype.

She used live interactive chat with fans where she took questions about their favorite shows, sometimes involving spoilers for upcoming episodes.

Virtual booths, forums and designated meeting places allow participants to connect with event staff or fellow attendees using online chat, video and voice.

It is a place where students can use PCs, chat or work in groups with few restrictions.

People use chat, messaging and e-mail to make and stay in touch with friends worldwide, sometimes in the same way as some previously had pen pals.

Optus also uses [24]7 Inc. for telephone & chat based offshore support.

By using chat, the student and the professor found a solution together.

Poptropica uses pre-scripted chat which allows players to communicate without sharing personal information.

The other players must use chat to guess the object.

Therefore the website allows creating your own personal account, where you can also use chat with other members of the site, add your own media and information.