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First Life bills itself as a 3D Analog World. It makes ambitious claims about the users’ ability to ‘work, reproduce and perish.’ There does not seem to be a terms of service agreement, suggesting that users would have to rely upon the court system for intellectual property protection, a distinct disadvantage compared to, for example,

I bought my son a batting helmet. “Common substances (such as paints [and] decals) applied to this helmet can cause permament damage not visible to you.” You know where I read that? On the decal applied to the helmet.