User blog comment:Dopp/Technical Update: November 15, 2011/@comment-7256067-20111117225259/@comment-2217546-20111118050609

Jazzi is correct. An additional feature that would be nice is a way to sustain a private chat as well as the odinary communal chat. However, I haven't PM'd anybody in quite some time, and it could have been addressed :p. Also, per Technology Wizard, a sound notification would be quite useless for me, it would initially just get in the way of something I'm watching or listening to while on Chat. That's something I do not particularly like about the Facebook chat.