I think it is quite a wonderful idea to buy the land overseas. It is good only if you know the country very well. You must be well acquainted with the area also and the current laws.
I'd love to buy property overseas in a country that had an economy weaker than mine so that my money would worth there a lot. Living there would be another matter.
I would only do this if I'm planning to live in that country in the future. It's hard to manage a property that is far from you, that's why I prefer to use a REIT instead.
I would invest in some property over seas as well. If I can find a decent administrator for it, then sure !
Depends what you define as "overseas", in many non western countries are not as strict when it comes to things like titles. One has to be extremely careful when purchasing. Also beaware it is difficult to take legal action against the seller.
I would be think about buying sites overseas as it can be totally worthless at some point. I think it is best to try buying in our area as we know the place much better.