Sorry for the stupid question, but... I guess there's a limit to the size an island can have, isn't there? I mean, as it grows larger, at some point it's bound to cross the borders with someone else's island. In my understanding, other people cannot put/remove blocks in your island unless invited, so there must be a region of some sort (though its information is inaccessible to us via command, just tried that). So: is there a fixed limit (and how much would that be), or does the limit grow with the size up to the point where two islands' borders cross (and therefore, the sooner you grow, the more land air you can reclaim)?