This is my plan precisely. It'll be Ghana for me. A surprising amount of the third world has a decent internet connection these days. If you can get that plus a decent hotel room for a few hundred bucks a month, why not give it a shot?
All with a laptop at hand.
I had a couple of weeks in Asia last month and it was very difficult to return. I have thought of going back a couple of times since.
I would say its also a great excuse to buy an air too :)