---XMPP really is a cool stuff to work about -----
Q&A for professional and enthusiast programmers
Q&A for system and network administrators
Q&A for people studying math at any level and professionals in related fields
Q&A for Ubuntu users and developers
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for people seeking specific software recommendations