So I've just finished Settlers of the New Virtual Worlds, by Erik Bethke & Erin Hoffman. It's actually both written and edited by them because the bulk of the book is a collection of essays by others.
- Raph Koster's piece on a declaration of player's rights (borrowing heavily from the 1789 French Declaration of Man and the Citizen and from the US bill of rights).
- Ren Reynolds' piece on issues with claims with virtual property and IP in which he compares with precedents in both US and UK law and shows just how murky the water might be.
- Erik Bethke's opening and closing pieces in which he seems to be putting his money where his mouth is, as he's taken some bold steps with his own EULA, for GoPets, which he runs.