Suggests that while most professionals meet new people and maintain relationships in the traditional way with phone calls, letters and face-to-face meetings, the use of social software enables the building of much larger and more effective networks. Discusses how to use the new tools that have emerged in the last few years - blogs, social network sites, relationship capital management software, and biography analysis software. Looks also at contact management software, personal websites, email lists, instant messaging, and web conferencing.