How Far Away Could You Be?

All airfare and needing to be onsite aside (which explains in part why Stella didn't post much last week) here's the question: once you make the break to working from pretty far away, how far away could you actually be? Is there a limit?

This article from InfoWorld says: why not half a world away? I will say that the time difference could get confusing, but if you're really just a contractor and working through project work with a set need to meet with people or otherwise be available, why not just say Phuket?

If I didn't have children to educate, I'd be working from a little beach town in Mexico or the U.S. Virgin Islands so fast it would make your head spin. Just sayin'.