Why settle on a foreign continent?

Hi,


Is there any real benefit for settling cities on a continent different to the one you started on?
obviously there is if there's a continent split next door to you. Just walk a settler across a few tiles and, bang, profit. But usually settling cities on a foreign continent (both actually settling or by conquest) is a massive palaver. Is it worth the effort?

Please help.

I didn't find the right solution from the Internet.

References:
forums.bcnnatics.com/threads/
Technology Marketing Video

Thanks