聊天室	青少年专用	留言板	博客blogs	即时通信软件
网络电话	社区	IRC

聊天室 语音聊天 Online Communities
MSN Groups	Delphi Forums	Big Boards	Talk City
YouThink.com	OpenACS	The Spoke	Whyville
CIX Online	Avid Gamers	Facemeet: Meet Faces, Make Friends	Wanderlist
Howard Rheingold	CommunityZero	Community Connect Inc.	Flork
BuildACommunity.com	Full Circle Associates	Communities.com	WhatHelps?