As I have mentioned in my earlier posts, Twitter-Backend supports three different modes viz. Single Contact, Multiple Contact and Chatroom. This was, until now, a gobal setting i.e. the mode setting applies to all users connected to Twitter-Backend. In other words, all the users together could be in one of the above three modes and it wasn't possible to have few users in Single Contact, few in Multiple Contact and few in Chatroom modes simultaneously. Further, this mode setting was controlled by the admin managing Twitter-Backend with no user level control. Past few days, I worked on making mode configurable per-user. Now, each user can use '#mode <mode-number>' command to switch to the mode that he wants to!