Google announced Lively service for 3D virtual world.

Second Life~ is a 3D virtual world where users can socialize, connect and create using voice and text chat.it have 4.6 million regular users in 13 Mar 2007.
Lively ~ allows user to create their own online spaces that can include natural or human-built settings and customize their avatars (which are relatively cartoonish in comparison to SL avatars).
Official | download
Requires Windows Vista/XP with Internet Explorer or Firefox By using Lively.
What’s your stance?…I think they may become  competetors.;)