Raanan Bar-Cohen gives seven tips for effective virtual collaboration based on his experience working with the global Automattic team. The tips are: 1) Empower your remote team, 2) Use real-time communication tools like IRC, 3) When real-time isn't possible, use semi real-time tools like blogs and group messaging, 4) Meet in person a few times a year, 5) Open source projects, 6) Obsess over metrics to guide decisions, and 7) Break projects into bite-sized tasks. Bar-Cohen also discusses Automattic's various open source projects including WordPress, BuddyPress, and a new group messaging platform called Prologue Groups.