I fairly new to SL and I just bought a 1024 on the mainland and built my own house. The question is: Does my ownership extend an unlimited distance into the sky? Isn't that very much unlike normal RL property??? How can anyone fly (by plane, zeppelin, jet-pack, flying saucer etc..) without running into all those buildings up in the sky? I see structures - (platforms, houses, spheres, columns etc.) above me if I fly upwards- some of them look like they are above my house. Now i've seen how ban lines work but if you are flying high enough you can cross over other properties, (on the ground anyway..). But those buildings in the sky are all over the place. And why can't we sail our boats on all the water between land that you can see on the world map? Is that all private land? I guess I find it hard to believe these rules are so unlike RL rules. What is the rationale behind this?