Other tough requirements for SL:
• Have the ability to display and read documents in common formats such as MS Office and Adobe.
• Support up to 200 avatars in the same area.
• Access the virtual world by allowing phone based attendees (those without access to a PC) to hear and be heard in-world. Full record and playback of all activities conducted in-world
• Import own 3D objects. Supports large area and multi-resolution terrain data in a WGS-84 compliant, geospatially-referenced format