It's your voice chat status indicator. Here's how to turn it off.

Second Life Official: Interviews, Video Tutorials, & Machinima

QUICKTIP: What is that white dot over my head?

Second Life is a 3D virtual world entirely created by its Residents. Since opening to the public in 2003, it has grown explosively and today is inhabited by millions of members from around the globe. This podcast features: (1) insightful interviews with Linden Lab staff, (2) Video Tutorials by Torley which teach you how to use SL in a fun and fast fashion, and (3) selected machinima works by community creators. You can join us @ secondlife.com

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Second Life Official: Interviews, Video Tutorials, & Machinima